角

Computing

constant angular velocity

collenchyma cell

winged bean (Psophocarpus tetragonolobus)

cladocerans

trigoniid (any clam of family Trigoniidae)

hepatica (Hepatica nobilis var. japonica); liverleaf

Mathematics

face angle

polled cattle

rostrum (of a crustacean)

siliqua; silique

sharp taste of (refined) salt

tremolite

jacana (esp. the pheasant-tailed jacana, Hydrophasianus chirurgus); lily-trotter

Dinocerata; extinct order of hoofed mammals

four-horned antelope (Tetracerus quadricornis); chousingha

pronghorn (Antilocapra americana); prong buck; pronghorn antelope

eyestalk (on a snail)

narrow place; cramped space

star anise (Illicium verum)

Mathematics

triangular matrix

angled luffa (Luffa acutangula); Chinese okra; dish cloth gourd; ridged gourd; sponge gourd; vegetable gourd; strainer vine; ribbed loofah; silky gourd; silk gourd; sinkwa towelsponge

hex key; hexagonal wrench key; Allen key (TM); Allen wrench (TM)

Computing

double-size character; character with a doubled width and/or height

Computing

full-width space; em space

arc second; arcsecond; second of arc