sexual relation

As far as I remember, the one eternal topic of conversation and subject of "wit" was the sexual relation.

May there be some sexual relation between A. Loddigesii and luteola; they seem very close?

Syndyasmian, sin-di-as′mi-an, adj. coupling, noting the sexual relation.

The Mo also exhibit traces of usages regulating the sexual relation which are of very ancient origin.

It is this form of sexual relation, physical though it may be, that is the outgrowth of evolution in man.