am·plex·us 
(ăm-plĕksəs)
(ăm-plĕksəs)n. pl. amplexus or am·plex·us·es
The copulatory embrace of frogs and toads, during which the male fertilizes the eggs that are released by the female.
[Latin amplexus, an embracing, from past participle of amplectī, to embrace : am-, ambi-, around; see AMBI- + plectere, to twine; see plek- in the Appendix of Indo-European roots.]
- retrofitter
- retroflection
- retroflex
- retroflexion
- retrogradation
- retrograde
- retrograde ejaculation
- retrogradely
- retrogress
- retrogression
- retrogressive
- retrogressively
- retrolental
- retronym
- retroocular
- retroperitoneal
- retropharyngeal
- retrorocket
- retrorse
- retrorsely
- retrospect
- retrospection
- retrospective
- retrospectively
- retrotransposon