acromphalus
— Noun
– English
～ abnormal protrusion of the navel; sometimes the start of umbilical hernia
acromyotonia
— Noun
– English
～ myotonia of the extremities only; causes spastic deformity of the hand or foot
acronym
— Noun
– English
～ a word formed from the initial letters of the several words in the name and pronounced as one word; "`NATO' is an initialism for North Atlantic Treaty Organization"; "the word `scuba' is an acronym for s(elf)-c(ontained) u(nderwater) b(reathing) a(pparatus)"
acrophobia
— Noun
– English
～ a morbid fear of great heights
acrophony
— Noun
– English
～ naming a letter of the alphabet by using a word whose initial sound is the sound represented by that letter
acropolis
— Noun
– English
～ the citadel in ancient Greek towns
acropora
— Noun
– English
～ coelenterate genus of order Madreporaria, including staghorn corals
acrosome
— Noun
– English
～ a process at the anterior end of a sperm cell that produces enzymes to facilitate penetration of the egg
acrostic
— Noun
– English
～ a puzzle where you fill a square grid with words reading the same down as across
acrostic
— Noun
– English
～ verse in which certain letters such as the first in each line form a word or message
Acrostichum
— Noun
– English
～ in some classification systems placed in family Polypodiaceae
acrylamide
— Noun
– English
～ a white crystalline amide of propenoic acid can damage the nervous system and is carcinogenic in laboratory animals; "they claimed that acrylamide is produced when certain carbohydrates are baked or fried at high temperatures"
acrylate
— Noun
– English
～ a salt or ester of propenoic acid
acrylic acid
— Noun
– English
～ an unsaturated liquid carboxylic acid used in the manufacture of acrylic resins
acrylic
— Noun
– English
～ a glassy thermoplastic; can be cast and molded or used in coatings and adhesives
acrylic
— Noun
– English
～ used especially by artists
acrylic
— Noun
– English
～ polymerized from acrylonitrile