WordReference Random House Unabridged Dictionary of American English © 2026
al•lo•type
(al′ə tīp′),USA pronunciation n.
al•lo•typ•ic
(al′ə tip′ik),USA pronunciation adj.
al′lo•typ′i•cal•ly, adv.
al•lo•typ•y
(al′ə tī′pē),USA pronunciation n.
- Biologya type specimen of the sex opposite to that of the holotype.
- Immunologyan antibody of a given class having certain molecular sites shared by only some members of a species and therefore acting as an antigen to other members of the same species.
- French allotypie, coined in 1956
- in immunological sense, probably back formation from allotypy 1915–20; allo- +
type
'allotype' also found in these entries (note: many are not synonyms or translations):