plastogamyn.

1891 M. M. Hartog in Q. Jrnl. Microsc. Sci. 33 7 In the true Myxomycetes, plasmodial fusion always precedes spore formation. Possibly..plasmodial formation has led to the various modes of karyogamy. The nuclei pass freely from place to place in the plasmodium, and may eventually be far removed from what was their original cytoplast; and the cytoplastic elements again undergo a reorganisation by their fusion, which we may term plastogamy.

1901 G. N. Calkins Protozoa 218 Thus cytotrophy, leading first to contiguity, may result in plastogamy, or the fusion of cell-plasms.

1932 L. A. Borradaile et al. Invertebrata ii. 26 The union of nuclei is karyogamy: in most cases of syngamy it is accompanied by plasmogamy or the fusion of cytoplasm... Plastogamy..is plasmogamy without karyogamy.

1969 Jrnl. Protozool. 16 422 (heading) Plastogamy in foraminifera.

1894 Jrnl. Morphol. 9 2/2 No nuclei are normally found in the ectoplasm, although a few are sometimes pushed out into it in the course of plastogamic fusion.

1938 Amer. Midland Naturalist 20 623 It is hardly a plastogamic occurrence because of the apparent fusion of the contents of the two cells, but its real significance must remain in doubt for the present.

2003 Revue de Paléobiologie 22 231 A paired-test of conjoined adult individuals and a few separated adult tests representing a rare record of plastogamic union in fossil foraminifera.