dactylology 
language of the deaf and dumb. See deaf- 
mute. 
Dactylometra (dak"ti-lo-met'ra), n. [NL., 
< Gr. (5a/.Tv/of, a finger, -f uerpov, a measure.] 
A genus of jellyfishes, of the family Pelagiidai 
and order Discopliora, related to Pelagia, but 
with more numerous tentacles. See cut on 
preceding page. 
Dactylomys (dak-til'o-mis), n. [NL., < Gr. 
da/fi-iy-of, hnger, + pvf, mouse.] A genus of 
hystricomorphic rodents, of the family Octo- 
Hedgehog-rat (Dactylomys tyfut}. 
dontidce and subfamily JHchinomyince, peculiar 
to South America. D. typut, the leading species, has 
a long scaly tail, and lacks the spines in the pelage which 
most of this group of hedgehog-rats possess. 
dactylonomy (dak-ti-lon'o-ini), . [< Gr. dd- 
KTvAOf, finger, 4- -vo/j.!a, < vi/ieiv, rule ; cf . vd/#>f , 
law: see nome.] The art of counting or num- 
bering on the fingers. 
dactylopodite (dak-ti-lop'o-dlt), . [< Gr. Sa- 
/cru/lof, a finger or toe, + irovf (7ro(5-), = E. foot, + 
-te 2 .] In crustaceans, the seventh and last (dis- 
tal) segment of a limb ; a dactylus. It is the last 
segment of a developed etulopodite, succeeding the propo- 
dite, forming in a chelate limb, as of the lobster, with 
a process of the propodite, the nippers or pincers of the 
claw. See cut under endopodite. 
Dactylopora (dak-ti-lop'o-ra), 11. [NL., < Gr. 
(5<kru/tof, finger, + 7r6))of, passage.] The typi- 
cal genus of the family Dactyloporidai. 
dactylopore (dak'ti-lo-por), . [< Gr. SaKTvlios, 
finger, + ir6pof, passage, pore.] In ro67. : (a) 
The pore or opening of a dactylozooid in the 
hydrocoralline hydrozoans, as millepore coral. 
Moseley, 1881. (b) A foraminifer of the family 
Dactyloporidce. 
dactyloporic (dak"ti-lo-por'ik), a. [< dactylo- 
pore + -ic.] Of or pertaining to a dactylo- 
pore. 
Dactyloporidse (dak"ti-lo-por'i-de), n.pl. [NL., 
< Dactylopora + -ida:] ' A family of imperfo- 
rate milioliue foraminifers. 
Dactylopteridae (dak"ti-lop-ter'i-de), 11. pi. 
[NL., < Dactylopterus + -idee.'] A family of 
mail-cheeked fishes, typified by the genus Dac- 
tylopterus. They have a distinct short spinous dorsal 
and a short soft dorsal and anal ; and the pectorals are di- 
vided into a small upper and very long major portion, and 
are expansible in a horizontal direction. The species are 
capable of long flying leaps from the water. Cephalacan- 
thidat is a synonym. 
dactylopteroid (dak-ti-lop'te-roid), a. [< Dac- 
tylopterus + -oil?.] Pertaining to or having the 
characters of the Dactylopteridte. 
dactylopterous (dak-ti-lop'te-rus), a. [< NL. 
dactylopterus, < Gr. oaKTivlof, finger, + impfo, 
wing, = E. feather.] In ichth., having several 
inferior rays of the pectoral fin free, in part or 
entirely; specifically, pertaining to or having 
the characters of the genus Dactylopterus. 
Dactylopterus (dak-ti-lop'te-rus), n. [NL. : 
see dactylopterom.] A genus of acanthoptery- 
gian fishes, typical of the family Dactylopteridcr, 
Flying Gurnard {Dactylopterus -voti'tans). 
having the pectoral fins enormously enlarged 
and wing-like, and divided into two portions. 
D. mKtans is the flying gurnard, also called f>jimj-fah, a 
name shared by the members of another family, Exueir- 
tidce. CcphalacanthuH is a synonym 
dactylorhiza (dak"ti-lo-ri'z'a), n. [NL., < Gr. 
oa/criiAoc, finger, + #<, root.] Finger-and-toe, 
a disease of the roots of turnips, causing them 
1440 
to divide and become hard and useless. It is 
believed to be due to the nature of the soil, and is distinct 
from anbury, which is caused by the attacks of insects. 
Dactyloscopidae (dak"ti-los-kop'i-de), n. pi. 
[NL., < Dactyloscopus + -id<e.] A family of 
fishes, represented by the genus Dactyloscopus. 
They have an elongated antrorsilorm body, cuboid or sub- 
conic head, fringed opercles, very wide branchial aper- 
tures, a long single dorsal with its anterior portion spi- 
nigerous, and approximated ventrals with a spine and 3 
rays each. The species are of small size, and inhabitants 
of the warm American seas_. 
Dactyloscopus (dak-ti-los'ko-pus), n. [NL., < 
Gr. rta/crnAof, finger, + anoireiv, view; cf. Vra- 
noscopus.] A genus of fishes, typical of the fam- 
ily Dactyloscopida:, and distinguished by finger- 
like or inarticulate ventral rays. 
dactylose (dak'ti-los), a. [< NL. dactylosus, < 
Gr. <5<krti/.of, finger: see dactyl.] In 6ot., same 
as dactyloid. 
dactylotheca (dak"ti-lo-the'ka), 11. [NL., < Gr. 
rfa/iTuAof, finger, + tiquq, a case: see theca.J In 
ornitlt., the integument of the toes of a bird; 
the horny, leathery, or feathered covering of 
the toes. [Little used.] 
dactylous (dak'ti-lus), a. [As dactylose.'] In 
zool. and anat., of or pertaining to a dactyl. 
dactylozooid (dak'ti-lo-zo'oid), . [< Gr. rfd- 
KTvhoi;, finger, + moid.] In zoiil., an occasional 
elongated appendage of hydrozoans, devoid of 
a mouth and gastric cavity, and having a simple 
tentacular function : so called from its shape. 
Besides the constant nutritive polyps and medusoid gono- 
phores, there are inconstant modified polypoids or medu- 
soids. These are the mouthless worm-like dattylozwid* 
which . . . are provided with a tentacle, which . . . has no 
lateral branches or aggregations of nematocysts. 
Claus, Zoology (trans.), I. 246. 
dactylus (dak'ti-lus), . ; pi. dactyli (-11). [NL., 
< Gr. 6dKTv).of, finger, toe: see dactyl.] 1. In 
zool. : (a) In Crustacea, the last segment of the 
normally 7-jointed leg; a dactylopodite. It is 
the movable claw of the two that make the nip- 
per or chelate claw, (b) In entom., one or all of 
the tarsal joints which follow the first one in any 
insect, when, as in a bee, for example, the first 
joint is much larger than the rest and known 
as the metatarsus orplanta. In bees this first joint 
is different in structure as well as size from the rest, and is 
specifically called the scopula. When the large first joint 
is called the planta, the dactylus is known as digitus, as 
in Kirby and Spence's nomenclature. The use of dactylun 
in this sense is by Burmeister and his followers, (e) In 
conch., a piddock, Pholas dactylus. 
It is the property of the dacti/lus (a fish so called from 
its strong resemblance to the human nail) to shine bright- 
ly In the dark. Pliny, Nat. Hist, (trans.), ix. 87. 
2. In anat. See diyitus, 1. 
Dacus (da'kus), n. [NL., < Gr. ddraf, an ani- 
mal of which the bite is dangerous, < Saicvtiv, 
bite.] A genus of dipterous insects, of the fam- 
ily Muscida;, or flies. D. oleai is a species in- 
jurious to the olive. 
dad 1 (dad), n. [Not in literary use except in 
delineations of rustic speech; early mod. E. 
also dadde (and dadda; cf. dim. daddy); < late 
ME. dadd, dadde ; perhaps of Celtic origin : < 
Ir. daid = Gael, daidein = W. tad = Corn, tat = 
Bret, tad, tat, father; appar. imitative of child- 
ish speech, the word being found in various 
other languages; cf. L. fata, dim. latulu, father, 
papa, = Gr. rdra, Terra, father (used by youths 
to their elders), = Skt. tata, father, tdta, friend, 
= Hind, dada, Gypsy dad, dada, = Bohem. tata 
= Lapp, dadda, father. Cf . papa, similarly imi- 
tative. Hence dim. daddy.] A father; papa. 
[Rustic or childish.] 
Zounds ! I was never so bethnmp'd with words, 
Since I first called my brother's father dad. 
fihak., K. John, ii. 2. 
dad 2 (dad), r. ; pret. and pp. dadded, ppr. dad- 
ding. [E. dial., = Sc. daud; origin obscure.] 
1. traits. 1. To dash; throw; scatter. 
Nervous system all dadded about by coach travel. 
Carlyle, in Froude, II. 9. 
2. In coal-mining, to mix (fire-damp) with atmo- 
spheric air to such an extent that it becomes 
incapable of exploding. [North. Eng.] 
II. intrans. To fall forcibly. 
dad 2 (dad), n. [< dad 2 , v.] A lump; a large 
piece : as, a dad of bread. [Prov. Eng.] 
dadda (dad'a), n. Same as dad 1 and daddy. 
daddie, n. See daddy. 
daddle 1 (dad'l), v. i. ; pret. and pp. daddled, ppr. 
driddling. [Sc., also daidle ; freq. of dade, q. v.] 
To walk with tottering steps, like a child or an 
old man ; waddle. [Rare.] 
daddle 1 (dad'l), n. [Sc., also written daidle, 
and dim. daddlie, daidlie, < daddle, daidle, v.] 
A large bib or pinafore. 
dsedalenchyma 
daddle 2 (dad'l), H. The hand. [Slang and prov. 
Eng.] 
Werry unexpected pleasure ; tip us your c 
Ki,i:/x!eii, Alton Locke, xxi. 
daddock (dad'ok), 11. [Origin unknown.] The 
heart or body of a tree thoroughly rotten. 
[Rare.] 
The great red daddockx lay in the green pastures where 
they had lain year after year, crumbling away, and sending 
forth innumerable new and pleasant forms. 
S. Judd, Mtrgaret, ii. 1. 
daddocky (dad'ok-i), a. [< daddock + -i/ 1 .] 
Rotten, like a decayed tree. [Prov. Eng.] 
daddy, daddie (dad'i), n. ; pi. daddies (-iz). 
[Formerly also dadda; dim. of r/urfi, q. v.j A 
father ; papa : diminutive of dad 1 . 
I'll follow you through frost and snaw, 
I'll stay no langer wi' my daddie. 
Glasgow Peggy (Child's Ballads, IV. 77). 
daddy-long-legs (dad'i-long'legz), . 1. In 
Great Britain, a name of tipularian dip^prous 
insects, or crane-flies, of the family Tipulida>. 
Also called fatlier-lii;/-lc;/s and Harry-long-legs. 
2. In America, a popular name of the opilio- 
nine or phalangidean arachnids or harvestmen, 
spider-like creatures with small rounded bodies 
and extremely long, slender legs. Also called 
grandfather-long-legs and granddaddy-long-legs. 
See Phalangium. 
daddy-sculpin (dad'i-skul'pin), 11. A eottoid 
fish, Cottus grcenlandictis. See scvlpin. 
dade (dad), v. ; pret. and pp. daded, ppr. dad- 
ing. [Origin obscure; cf. the freq. daddle 1 . 
Hardly connected with toddle.] I. intrans. To 
walk slowly and hesitatingly, like a child in 
leading-strings ; hence, to flow gently. [Rare.] 
No sooner taught to dade, but from their mother trip, 
And, in their speedy course, strive others to outstrip. 
Drayton, Polyolbion, i. 295. 
Hut eas'ly from her source as Isis gently dades. 
Drayton, Polyolbion, xiv. 289. 
II. trails. To hold up by leading-strings. 
[Rare.] 
The little children when they learn to go, 
By painful mothers daded to and fro. 
Drayton, Earl of Surrey to Lady Geraldine. 
dadge (daj), v. A dialectal variant of dodge. 
dadian (da'di-an), . [Mingrelian.] The title 
borne by the governor or prince of Mingrelia. 
See Mingrelian. 
dado (da'do), n. [< It. Sp. Pg. dado, a die, a 
cube, = E. die: see die 3 .] In arch.: (a) That 
part of a pedestal between the _ 
base and the cornice ; the die. 
(6) The finishing of the lower 
part of the walls in the interior 
of a house, made somewhat to 
represent the dado of a pedes- 
tal, and consisting frequently 
of a skirting of wood about 3 
feet high. The dado is also 
sometimesrepresented by wall- 
paper, India matting, or some 
textile fabric, or by painting. 
The walls of the drawing-room are covered with a tap- 
estry of yellow and, white, the figure being scrolls of yel- 
low on a cream-white ground. A dado forty inches high 
is of velvet, chocolate brown in color. Art Age, V. 48. 
dado (da'do), r. t. [< dado, n.] 1. To groove. 
2. To insert in a groove, as the end of a shelf 
into its upright. 
dado-plane (da'do-plan), n. A plane with pro- 
jecting blade used for cutting grooves. 
Dadoxylon (da-dok'si-lon), . [NL., < Gr. Mf 
((5a(5-), Attic contr. of <'a/f (dai(S-\ a torch (< da/- 
etv, kindle), + f i'/W, wood.] The generic name 
given by Endlicher to certain fossil trees not un- 
common in the coal-measures of Great Britain 
and of other countries. The wood of this tree is gen- 
erally recognized as being similar in some respects to that 
of many recent conifers. Grand 'Eury, however, considers 
Dadoxijlan as belonging to the cycadaceous genus Corda- 
ites, while Kraus allies it with the araucarias, and puts it 
as a subdivision of the genus Araucaroxylon. 
daedal, a. See d<-dal. 
Daedalea (de-da'le-a), n. [NL. (with ref. to 
their labyririthiforiii pores), < Gr. AoMoAof, the 
builder of the labyrinth of Crete, < dai'da^of, 
skilfully wrought : see dedal.] A genus of hy- 
menomycetous fungi, belonging to the family 
Polyporei, having the pores firm and, when 
mature, sinuous and labyrinthiform. The species 
are indurated in texture. :md gruu on dead \\oinl. 'I here 
are l:t species knmvn in Europe, and over 20 are said to 
occur in North America, some beiiii,' common to both con- 
tinents. 
daedalenchyma fded-a-long'ki-mii), . [NL., < 
Gr. 6al6a'/.of, skilfully wrought, + eyxvfia, in- 
Pedestal. 
a, surhase or cornice ; 
b, dado or die ; c, base. 
