a suffix used in the formation of names of classes and orders:
denoting animals belonging to a class or order: Crustacea (class), Cetacea (order)
word-forming element denoting orders and classes in zoology, from Latin -acea, neuter plural of -aceus “belonging to, of the nature of” (enlarged from adjectival suffix -ax, genitive -acis); neuter plural because of a presumed animalia, a neuter plural noun. Thus, crustacea “shellfish” are *crustacea animalia “crusty animals.” In botany, the suffix is -aceae, from the fem. plural of -aceus, with reference to Latin plantae, which is a fem. plural.
a suffix used in the formation of names of families: Rosaceae. suffix denoting plants belonging to a family: Liliaceae, Ranunculaceae
a beta blocker, C 18 H 28 N 2 O 4 , used in the management of hypertension, angina pectoris, and cardiac arrhythmias.
acec American Consulting Engineers Council Area of Critical Environmental Concern
a playing card or die marked with or having the value indicated by a single spot: He dealt me four aces in the first hand. a single spot or mark on a playing card or die. Also called service ace. a placement made on a service. any placement. a serve that the opponent fails to […]