† discocytulan. [after German Discocytula (Haeckel 1875, in Jenaische Zeitschr. f. Naturwissensch.9 407)] EmbryologyObsoleterare (Haeckel's term for) a fertilized meroblastic (discoblastic) ovum prior to cleavage (cf. cytulan.).
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1876 Q. Jrnl. Microsc. Sci.16 61 Haeckel is very careful to insist on the unicellular character of the Discomonerula and Discocytula, even where it attains the large size seen in Birds.