a. [mod. f. Gr. ἀρρενοτόκ-ος (f. ἄρρην male + -τόκος begetting) + -OUS.] (See quot.) Arrenotoky, ‘that form of parthenogenesis in which the unimpregnated females produce only males’ (Syd. Soc. Lex., 1880).
1877. Huxley, Anat. Inv. Anim., vii. 446. The terms arrenotokous and thelytokous have been proposed by Leuckart and Von Siebold to denote those parthenogenetic females which produce male and female young respectively.
