sister

noun sis·ter \ ˈsi-stər \
Updated on: 12 Nov 2017

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 vows
b :a girl or woman who is a member of a Christian church
3 a :a girl or woman regarded as a comrade
b :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
6 a :girl, woman
b :person usually used in the phrase weak sister
7 :a member of a sorority

Examples of sister in a Sentence

  1. The sisters live in the convent.

Recent Examples of sister from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sister.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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



SISTER Defined for English Language Learners

sister

noun

Definition of sister for English Language Learners

  • : a girl or woman who has one or both of the same parents as you

  • —used when talking to a woman

  • : a member of a religious community of women


SISTER Defined for Kids

sister

noun sis·ter \ ˈsi-stər \

Definition 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

adjective

Medical Dictionary

sister

noun sis·ter \ ˈsis-tər \

medical Definition of sister

chiefly British
:a head nurse in a hospital ward or clinic; broadly :nurse


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