Apteryx 
longest and licst known; .1. ,,KI ,it,-l!i inhabits Stewart 
Island, ami .1. iiii-i-ni the South Island. All arc known a- 
kiwls, kiwi-kiwi*, 
or kivi kivis, from 
tlii'ir cry. Also, im- 
properly. Aiiii-riii/j- 
and .!/'/' "/' . 
2. L'-c-] A bird 
of this genus; 
a kiwi (which 
see), 
aptha (ap'thii), 
It. See tlftlltltit. 
aptitude (ap'ti- 
tiid), n. 1= V. 
ill/tilllllt; < ML. 
iililitnilo, < L. 
ni>tn.t, apt, lit: 
see apt, a. Cf. 
iittilnilr, which 
is a doublet of 
iljl/i/Klll'.] 1. 
Tho state or 
quality of being 
apt or lit for or suited to a purpose, place, or 
situation ; fitness ; suitableness. 
Aiititmtf . . . for tin- end to which it was aimed. 
Decay <if Christ. I'ii-iu. 
2. A natural tendency or acquired inclination ; 
both capacity and propensity for a certain 
course: as, oil has an aptitude to burn; men 
acquire an aptitude to particular vices. 
He that is about children should learn their nature and 
ttl'tiltiili'*. Lock?. 
The Americans have at all times shown a remarkable 
ii t >iiiinti- tor tin- sea faring lift-, and they did not wait for 
tin- Declaration of Independence it) take measures for the 
construction of an independent navy. 
Lecky, Eng. in 18th Cent., xiv. 
3. Readiness in learning ; teachableness ; 
quickness to understand and acquire; intelli- 
gence; talent. 
He was a lioy of remarkable aptitude. Macaulay. 
= Syn. Faculty, Capacity, etc. See ge HIV*. 
aptltudinal (ap-ti-tu'di-nal), a. [< ML. apti- 
tuilo (apliliidiii-\ + -til: sec a/ititiide.] 1. Re- 
lating to an aptitude oraptitudes. 2. Existing 
in possibility or capacity merely. [Rare.] 
AptitUdlnal relation, a relation which does not require 
the correlate t exist actually, hut only potentially ; as, for 
example, the relation of a desire to its object. 
aptitudinally (ap-ti-tu'di-nal-i), adv. In an 
aptitudinal manner; in a way which reveals 
aptitude. 
aptly (apt'li), adv. In an apt or suitable man- 
ner, (a) With exact correspondence ; with fitness ; justly. 
I have forgot your name ; but, sure, that part 
Was aptly fitted, and naturally perform'd. 
Shak., 1. of the 3., Ind., i. 
(ft) Suitably ; appropriately: of language, pertinently, ap- 
positely, or significantly. 
I mucus very aptly remarks. Addison. 
Words aptly cull'd and meanings well express'd 
Can calm the sorrows of a wounded breast. 
Crabbe, The Village. 
(c) Readily ; quickly ; cleverly : as, to learn aptly. 
aptness (apt'nes), . The state or quality of 
being apt, in any sense of that word. 
The aptness of things to their end. Hooker. 
What should he the apttifsx of birds, in comparison of 
beasts, to imitate speech may he inquired. Bacon. 
At his ttrst aptness, the maternal love 
Those rudiments of reason did improve. 
Dryden, Eleonora, 1. 218. 
Aptornis (ap-t6r'nis), n. [NL., short for *ap- 
terornis, (. Gr. airrepo^, wingless (see apterous), 
+ opvif, a bird: see ornitliology.~] A genus of 
recently extinct ralliform birds, probably of 
the family Rallida;, related to the extant genus 
OdldrOMUS. Its remains are found in New Zealand with 
those of the moa. A. defossor and A. atUK/Omtl are two 
species described by Owen in 1871. 
aptosochroraatisni (ap-to'so-kro'ma-tizm), . 
[< Gr. aTrnir (djrrur-), not falling off (cf . ajrruoia, 
stability, firmness: see aptote), + chromatism .] 
In ornith., change of color of the plumage with- 
out loss or gain of any feathers. Coues. 
aptote (ap'tot), . [< LL. aptotum, only in pi. 
ii/itotti, < Gr. (iKTurov, neut. of dTtTorof, without 
case, undeclined, also as airruf (axrur-), not fall- 
ing, < a- priv. + nrurof, verbal adj. of Trmreiv, 
fall, whence also vruatf, case, inflection.] In 
il rn in . , a noun which has no distinction of cases ; 
an indeclinable noun. 
aptotic (ap-tot'ik), a. [< aptote + -'<.] 1. Of 
or pertaining to an aptote ; having no declen- 
sion. 2. Uninnected; having no grammatical 
inflections: said of certain languages. 
aptychus (ap'ti-kus), n. ; pi. aptychi (-ki). 
[NL., < Gr. n- priv. + KTVXII, a fold, < irrioaeiv, 
fold.] In Ce/iliitlo/ioilii, a plate formed of a 
shelly substance, found in the terminal cham- 
283 
her of certain fossil mollu.sks, us ammonites, 
and regarded by some as an operculnm. It wa-. 
in ih considered i" he one of the pans of dittcn in 
animals called tl inonellite.s, lepailili s. etc. 
'I'lie Ajiliii-lii . . . occupy the middle of tin- posterior 
all of the' terminal chamber of the Ammonite, and have 
(heir \>Utt lOWMUta it.-. Mi.nilh. Nothini: i-. certainly 
known a-- tn the nature of the Ajitiflii or Anaptychi. 
HHJ-I.-II, Anal. Invert., p. l.,:i. 
Apulian (a-pu'li-an ).. [< L. .t/iii/i'i, .l/i/ni/iii, 
+ -il>i.\ Of or pertaining lo tin- region culled 
Apulia, in southern Italy, or to its inhabitant-. 
In Hi. man time.-, Apulia Included the region i.etuceii the 
Apennines and the Adriatic, south of the Krelitani and 
east of Samninm, anil later al-n the \lr--;ipiaii ]ii-iiii]Mila. 
\lo.lcrn Apulia comprises the pri>\ in- i i. am! 
A hill In the midst of the .Ir" 1 '"" plain. 
Kiirih: lli-it., XV. :ifl. 
Apulian pottery, a name Kiven to the. Italo.iircek pot- 
tery found in Apulia and southeastern Italy generally, 
especially to the vase?* with red Inures on a lustrous black 
ground, .some of the most important examples of which are 
from this region. 
Apus (a'pus), n. [NL., <Gr. &TTOVC, without feet: 
see apod, Apoda, etc.] 1. One of the southern 
constellations form- 
,1 
ed in the sixteenth 
century, probably 
by Petrus Theodori ; 
the Bird of Paradise. 
It is situated south of the 
Triangulum Australe, 
and its brightest star It 
of the fourth magnitude. 
2. A genus of bran- 
chiopodous or phyl- 
lopodous entomos- 
tracous crustace- 
ans, typical of the 
family Apodidai or 
Apusida; : named (in 
the form Apous) by 
Frisch in 1732. Like 
nearly all animals which 
have been miscalled Aptl- Apus glacialis.A, lateral view, 
D pujii". cephalostegite, separated at 
pods ranging from 11 to the rest ofthe carapace, or omoste. 
60 pairs. The genus is ee ; 21 to 16, the six simple somites 
characterized by a large SSfg&ttJSSSSZR 
shield-like carapace, or ming-feet; A eye; //, autennule ; 
cephalothorax in one /K(or/*). labnim. 
piece, covering most of 
the animal. A. canmformii, called the crab-shelled 
shrimp, is 2 or 3 inches long, and is noted for its repeated 
mulls (it sheds its skin twenty times in two or three 
months), and for the vast numerical preponderance of the 
females, the males having been only recently discovered. 
3. la ornith.: (a) A genus of birds, of the fam- 
ily Cypselida:, established by Scopoli in 1777: 
equivalent to Cypselus of Illiger, 1811. (6) [I. c.] 
The specific name of the common swift of Eu- 
rope, Cypselus apus. 4. [i. c. ; pi. apt (a'pi).] 
In teratol., a monster destitute of posterior 
limbs, while the anterior are well formed. 
Apusidae (a-pu'si-de), n. pi. [NL., irreg. < Apus 
T -idee: so formed to make literal distinction 
from Apoditlti'."\ Same as Apodidee. 
Apygia (a-pij'i-a), . pi. [NL., < Gr. a- priv. 
-P irvyri, buttock.] An order of Bracliiopoda : 
a synonym of Arthropoinata (which see). 
Apyrenaemata (a-pi-re-ne'ma-ta), n. pi. [NL., 
neut. pi. of aiii/reiitematiis : see apyrenematous.] 
A division of animals including those in which 
the blood-corpuscles are not nucleated; those 
animals which have blood-disks as distinguished 
from nucleated cells of the blood. The term Is 
practically the same in application as Mammalia, though 
nuclei have been discovered in the form-elements of the 
blood of a few mammals. 
apyrenematous (a-pi-re-nem'a-tus), a. [< NL. 
(ijii/reiHRmatus, < Gr. d- priv. + pyrenmnatus : 
see a-18 and pyrenematous.'] Not pyrenema- 
tous; having blood which contains disks, or 
non-nucleated corpuscles, as a mammal. 
apyretic (ap-i-ret'ik), a. [< Gr. M/pmc. with- 
out fever, \ a- priv. + irvperoi;, fever. Cf . a\>y- 
rexia.~\ Without pyrexia or fever: specifically, 
in pathol., applied to those days in which the 
intermission of fever occurs in agues, and also 
to local affections which are not accompanied 
with fever. 
apyrexia (ap-i-rek'si-a), n. [NL.,< Gr. airvpe^ia, 
absence of fever, < iirvpocrof, without fever, < <i- 
priv. + *mtpKT6f, verbal adj. of wpiaattv, be in 
a fever, < TrvperoV, fever: see pyretic, and cf. 
<i/>i/rrtic.~\ The absence or intermission of py- 
rexia or fever ; the interval between the parox- 
ysms in intermittent fevers. Also upijn-j'ii. 
a'pyrexial (ap-i-rek'si-al), a. [< apyrexia + -al.] 
Relating to or characterized by apyrexia ; apy- 
retic. 
apyrexy (ap'i-rek-si), n. Same as npyrexia. 
aquage 
apyrotype (a-]ii'ro-1i]i), . [< Gr. ariywr, with- 
out lire (see tiiti/rutix), + ti/jn-, q. v.J Printing- 
type produeed without heat, as by means of ilies 
and pressure, instead of by ca.-ting in molds. 
apyTOUS (a-pi'rus), n. [s Ql, iirwpof, without 
lire, < a- priv. + -I'/i, lire, = K. Jin- : see fire and 
/'.'/(''. ] Inconiliustible, or cupublo of sustain- 
ing a strong heat without alteration of form or 
propertii-. "-. mica, and tale. Apjrous 
K. "lj, , ililtcr from ret i act m \ n> - in i maiiiinu inicliaimei! 
\ i n under extreme heat, uhile th-' latt. r may lie altered 
even though not fused bv fa*, 
aq. In /ilmr., an abl)i-eviation of in/nil. 
aqua (a'kwii), . [L. (> It. nn/int = Sp. Pg. 
= V. 1'ini), = Both, ttliini, river, = OHG. 
.MIKi. nlii- (G. .In, the name of several 
rivers) = OS. ulin = AS. .,/ dor *mh : see - //. 
island), water, river, = OFries. , c = led. n, 
water, river, = Sw. A = Dan. mi. a brook.] 1. 
Water: a word much used in medical pre- 
scriptions written in Latin. I in pharmacy 
generally, also in old chemistry, to denote a 
solution, or menstruum of water. 2. In mint., 
some watery fluid or humor. Aqua ammonias, a 
solution of ammonia gas in water, having the chemical 
properties of an alkali hydrate. Aquse ductus et aquaa 
haUStUB (coliductin;; of water and drawiiiL' ot uatcr), in 
Si-tx lit'i-, two servitudes, the former consisting in a right 
of carrying a watercourse throu-li th, -i IHM|S of another, 
and tile latter of watering cattle at a mer, well, or pond 
in the ground of another.- A qua fortisfstroiig water), a 
name given to weak and impure nitric acid, liunii!. n.^m 
fortis contains twice as much acid as single aipia fortis. 
Aqua labyrinth!, the Huid of the lahjrintli of the 
ear; the perilympli, aijuula acustica, or liquor Cotnnnii.- 
Aqua marina, see n.y/,.,./,,. Aqua mirabilis 
(wonderful water), (a) A preparation of cloves, galaiigals, 
cnhriis. mace, cardamoms, nutmegs, ginger, and spirit of 
wine, digested twenty-four hours, then distilled. Juhns&n. 
(b) A carminative cordial prepared from oil of pimento 
(allspice): also called Kjiii-itn* jii/miitn: //M//<//<X//. 
Aqua Morgagni. Same as liijuor Moryaffni (which see, 
under liquor). Aqua regia or aqua regalis (royal wa- 
ter), a name given to a mixture of one part of nitric acid 
and three to four parts of hydrochloric acid, from its power 
of dissolving gold. Aqua Toiana, a poisonous fluid made 
about the end of the seventeenth century by a woman of 
Palermo named Tofana or Totfana, who confessed that no 
fewer than 00 persons had been killed with it. It con- 
sisted chiefly, it is supposed, of a strong solution of arsenic 
obtained by a long boiling of its oxid. Also called ariltetta. 
Aqua vitse (water of life), an old name for alcohol, 
now familiarly applied to native distilled spirits. 
aquaeductUS(a-kwe-duk'tus), . [L. : see aque- 
duct.] In anat., a canal or channel conveying 
a fluid, or supposed to do so. Also aqueductus. 
Aquseductus cochleae, the aqueduct of the cochlea, 
a minute venous channel in the temporal hone, running 
from the scala tympani of the cochlea to a point just below 
the internal auditory meatus. Aquseductus Fallopii. 
the aqueduct of Fallopius, a channel through the temporal 
Ixme, leading from the internal auditory meatus and end- 
ing at the stylomastoid foramen, transmitting the facial 
nerve. AquaaductUS Sylvii, the aqueductof Sylvius, the 
channel of communication between the third and fourth 
ventricles of the brain. Also called Her a tertio ad i/unr- 
tum mntriculmn. Aquaeductus vestibuli, n small canal 
running from the vestibule of the ear to the posterior sur- 
face of the petrous portion of the temporal hone. It trans- 
mits the ductus endolymphaticus. 
aquaemanale (a"kwe-ma-na'le), . ; pi. aqu<e- 
manalia (-H-&). [Mil., also aquimanile, aquimi- 
nale, aquiminile, LL. aqitiminale, L. aqiuema- 
nalis, LL. also aquiminarimn, < L. aqua, water, 
+ manalc, a ewer, neut. of manalis, flowing, 
< manare, flow, 
trickle, drip.] 1. 
In l!< ni i. a a i \i i. , a 
pitcher or vessel 
for pouring out 
water, used espe- 
cially for pour- 
ing water over 
the hands into a 
basin during and 
after meals. 2. 
The basin in 
which, accord- 
ing to an an- 
cient church cer- 
AquaMnanaleof copper, uth century. It emOny, thepriest 
is fifled by an opening at the top of the v j i j 
head ; the tail foms aTiamile. WllshedhlS hands 
before celebrat- 
ing mass. 3. A kind of water-ewer formerly 
used in private houses, and frequently made in 
grotesque forms. The term is now used spe- 
cifically in this sense. 
aquafortis (a-kwa-for'tis), w. See aqua fortis, 
under aqua. 
aquafortist (a-kwa-fdr'tist), . [< aqua fortis 
f -i.it.~] One who etches by means of aqua 
fortis. JV. E. D. 
aquage (a'kwaj), . [< LL. aqiiagium, aque- 
duct, < L. aqua, water, + nafre,\ead: see agtt.~\ 
In lerfliaa : (a) The course of a mill-stream be- 
fore it reaches the pond formed by a dam. (6) 
Anv watercourse. 
