half.
It's "demi"
une demi-soeur
a boarder is called "un pensionnaire" in French. In boarding schools ("pensionnats" or "internats") the pupils are also called "internes". Pupils having their lunch at school but coming home every evening are called "demi-pensionnaires" (half-boarders) or "demi-pens" or even "demis"
"une demi-soeur"
demi
It's a half sized loaf of French Bread. The "Demi" is in reference to the size. Demi is french, translated it literally means "half". Hope this helps.
Actually, "demmi" is not a word. I'm sorry, but I can't provide a translate because of this. I'd be glad to answer again if you reworded your question so that I can know what word you are meaning by "demmi." The word "demi" in French means "half".
un et demi / une et demi
Demi(e)
et demi
demi-cousin
In French, "demi-frère" is masculine. It translates to "half-brother" in English. The term "demi-" is a prefix meaning "half," and since "frère" (brother) is a masculine noun, "demi-frère" also takes a masculine form.