English

extravalvular

From extra- + valvular.

Proto-Indo-European *h₁éǵʰs ‘out’

Proto-Indo-European *h₁eǵʰsteros

Proto-Italic *eksteros

Latin exter ‘being on the outside’

Latin extrā ‘outside, except, beyond’

Latin valva ‘double door, valve’

Latin valvula ‘diminutive of valva: valve, especially a…’

New Latin valvulāris

Today it means

adj From outside a valve (of the heart)

Language periods are conventional ranges, not dates for this word.

Etymograph / extravalvular