tricussate 
Trioecia 
(tricuspis, having three points or 
tines), tipped with three cusps or 
pointed tips. 
tricus’sate (tr7, three, + cussate), 
used for whorls of three leaves 
each, the leaves of each whorl 
alternating with those above and 
below; cf. vbrEcussate (G. 
Henslow). 
tricyclic (7p, from pets, three, 
KUxdos, a circle), when the members 
of a series are in three whorls. 
triden’tate, tridenta’tus (tridens, three- 
pronged), three-toothed, trident- 
pointed. 
tridig’itate, tridigita’tus (tri, three, 
digitus, a finger), thrice digitate, 
ternate. 
tri‘duus (¢riduum, the space of three 
days), lasting three days. 
tridy’mus (rpldvuos, triple), when of 
three laminae in Agarics, the 
middle is the larger. 
tridy‘namous (7p:, three, dvvasus, 
power), when three stamens out 
of six are longer than the rest; 
trie’der (ipa, a seat), triangular. 
trien’nis, triennia’lis (triennium, the 
space of three years), lasting three 
years. 
trifar’‘iam (Lat., triply), trifar’ious, 
-ius, facing three ways, in three 
vertical ranks. 
trifid, trif'idus (Lat.), three cleft. 
triflo’rous (éri, three, jlos, floris, a 
flower), three - flowered;  trifo’- 
liolate, trifoliola’tus (+ FOLIOLATE), 
with three leaflets; trifo'liate, 
trifolia’tus, trifo'lius (folium, a 
leaf), three-leaved. 
triform’is + (Lat., having three 
forms), bearing flowers of three 
different kinds, as certain Com- 
posites ; trimorphic. 
trifur’cate (trifurcus, with three 
prongs), having three forks or 
branches. 
trig’amous (rp, three, yduos, mar- 
riage), bearing three kinds of 
flowers ; trimorphic. 
trigem’/inous (trigeminus, 
tergeminate, trijugate. 
tri’glans (tr, three, glans, an acorn), 
triplets), 
containing three nuts within an 
involucre, as Castanea sativa, Mill. 
trig’onal (rplywvos, three-cornered), 
three angled; Trig’ones, pl., 
Spruce’s term for the thickening in 
the angles of the cells of the leaves 
in certain Hepatics, or as in collen- 
chyma; trigonocar’pus (xapmdés, 
fruit), fruit having three evident 
angles: trig’onous, -nus, three- 
angled, with plane faces. 
Trigyn’ia (rp, three, yur), a woman), 
a Linnean order of plants with 
three styles ; trig’ynous, -nus, with 
three pistils or styles. 
trihila’tus (ivi, three + Huitvm), 
having three apertures, as in some 
grains of pollen ; triju’gate, triju- 
ga'tus, triju’gous, tri‘jugus (jugum, 
a yoke), with three pairs of pinnae ; 
trilam’ellar (tri, three, lamella, a 
plate of metal), applied to a com- 
pound stigma having three divi- 
sions flattened like bands ; 
trilateral, trilatera’‘lis _—(latus, 
laterts, a side), prismatic, with 
three sides; trilo’bate, trilo’bus 
(lobus, a lobe), three-lobed; 
triloc’ular, trilocula’ris (loculus, a 
little cell), three-celled ; tri’m- 
erous, -rus (uépos, a part), in 
threes, three membered parts. 
trimes’tris (Lat., of three months), 
lasting three months, or maturing 
in that time, as Lavatera trimestris, 
Linn. 
trimor’phic, trimor’phous (7p, three, 
Hope), shape), occurring under 
three forms, of stamens and styles, 
long, short, and intermediate ; 
Trimonoe’cism (+ Monoecism), 
monoecious, but existing in 
trimorphous condition; Trimor’- 
phism, heterogony, with long-, 
short-, and mid-styled flowers. 
tri’mus (Lat.), lasting three years. 
triner’vate, trinerva’tus, trinerved’, 
triner'vis, triner'vius (tri, three, 
nervus, a nerve), three-nerved ; 
trinervula’tus (Lat.), with three 
nerve-like strands in the placenta ; 
trino’dal (nodus, a knot), with 
three nodes or joints; Trioe’cia 
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