Alternative form of semi-precious

Someone who studies at a seminary.

Occurring twice a month or at half month intervals.

In a manner occurring twice a month or at half month intervals.

Something done or made every half month, especially a periodical.

Permeable to some things and not to others, as a cell membrane which allows some molecules through but blocks other substances.

That has the characteristics of a semiconductor

Paid as a professional but on a part-time basis. / Of or pertaining to a semiprofession. / Of close to professional standard; prosumer.

A semiprofessional person.

(slang) Semiprofessional.