WordReference Random House Unabridged Dictionary of American English © 2026
mer•i•sis
(mer′ə sis),USA pronunciation n. [Biol.]
- Developmental Biologygrowth, esp. growth resulting from cell division. Cf. auxesis.
- Greek meri- (combining form of merís part, portion) + -sis
- 1935–40
'merisis' also found in these entries (note: many are not synonyms or translations):