полуотметность

Etymology
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Noun

 * 1)  semi-retractivity. Clarification: This stress is called “semi-retractivity” because it was assumed the leftward shift of the stress in the prefixed forms of the l-participle and aorist from the verbs of the Proto-Slavic accent paradigm b. In fact, the Proto-Slavic semi-retractivity is a consequence of the phonological prohibition on the rightward shift of stress from dominant roots to recessive suffixes in wordforms in which the stressed syllable was not the initial one.