Definition of sister
1 : a female who has one or both parents in common with another
2 often capitalized a : a member of a women's religious order (as of nuns or deaconesses); especially : one of a Roman Catholic congregation under simple vowsb : a girl or woman who is a member of a Christian church
3a : a girl or woman regarded as a comradeb : a girl or woman who shares with another a common national or racial origin; especially : a black girl or woman
4 : one that is closely similar to or associated with another sister cities
5 chiefly British : nurse
6a : girl, womanb : person —usually used in the phrase weak sister
7 : a member of a sorority
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Examples of sister in a Sentence
The sisters live in the convent.
Origin and Etymology of sister
Middle English suster, sister, partly from Old English sweostor and partly from Old Norse systir sister; akin to Latin soror sister, Sanskrit svasṛ
First Known Use: before 12th century
SISTER Defined for English Language Learners
sister
playDefinition of sister for English Language Learners
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: a girl or woman who has one or both of the same parents as you
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—used when talking to a woman
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: a member of a religious community of women
SISTER Defined for Kids
sister
playDefinition of sister for Students
1 : a female person or animal related to another person or animal by having one or both parents in common
2 : a member of a religious society of women : nun
3 : a woman related to another by a common tie or interest
sisterly
adjectiveMedical Dictionary
Learn More about sister
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See words that rhyme with sister Spanish Central: Translation of sister Nglish: Translation of sister for Spanish speakers Britannica English: Translation of sister for Arabic speakers
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