1. mediopassive - Noun
2. mediopassive - Adjective
mediopassive (not comparable)
(grammar) Pertaining to a voice of a transitive verb that is both middle voice and passive voice or reflexive and passive voice.
mediopassive (plural mediopassives)
(grammar) A mediopassive construction; a phrase that uses the mediopassive voice.
A few verbs have palatalization in the active along with s in the 3rd singular, but no palatalization and no s in the mediopassive, along with no root ablaut (the vowel reflects PToch ë). Source: Internet
Root ablaut occurs between active and mediopassive. Source: Internet
This suggests that, for these verbs in particular, the active originates in the PIE sigmatic aorist (with s suffix and ē vocalism) while the mediopassive stems from the PIE perfect (with o vocalism). Source: Internet
Furthermore, each set of endings comes with both active and mediopassive forms. Source: Internet