(organic chemistry) Any of a class of macrolides, isolated from marine dinoflagellates of the genus Amphidinium, that show antitumor activity.

(zoology) A small siliceous spicule having a denticulate wheel at each end, found in freshwater sponges.

plural of amphidisc

(rare) Alternative form of ambidextrous

plural of amphidontid

(zoology) Any extinct mammal in the family Amphidontidae.

amphikinetic

(historical) In Ancient Greece, a ceremonial feast celebrated on the fifth or seventh day after the birth of a child.

The property of being amphidiploid.

Of molluscs, exhibiting both left-handed and right-handed spiral shells within the same species