a female offspring having both parents in common with another offspring; female sibling.
Also called half sister. a female offspring having only one parent in common with another offspring.
a female friend or protector regarded as a sister.
a thing regarded as feminine and associated as if by kinship with something else:
The ships are sisters.
a female fellow member, as of a church.
a female member of a religious community that observes the simple vows of poverty, chastity, and obedience.
British. a nurse in charge of a hospital ward; head nurse.
a fellow black woman.
a woman who supports, promotes, or participates in feminism.
Informal. a form of address used to a woman or girl, especially jocularly or contemptuously:
Listen, sister, you’ve had enough.
being or considered a sister; related by or as if by sisterhood:
having a close relationship with another because of shared interests, problems, or the like:
We correspond with school children in our sister city.
Biochemistry. being one of an identical pair.
a female person having the same parents as another person
See half-sister, stepsister
a female person who belongs to the same group, trade union, etc, as another or others
(informal) a form of address to a woman or girl, used esp by Black people in the US
a senior nurse
(mainly RC Church) a nun or a title given to a nun
a woman fellow member of a Church or religious body
(modifier) belonging to the same class, fleet, etc, as another or others: a sister ship
(modifier) (biology) denoting any of the cells or cell components formed by division of a parent cell or cell component: sister nuclei
- Sister act
noun 1. a novel (1900) by Theodore Dreiser.
noun 1. the state of being a sister. 2. a group of sisters, especially of nuns or of female members of a church. 3. an organization of women with a common interest, as for social, charitable, business, or political purposes. 4. congenial relationship or companionship among women; mutual female esteem, concern, support, etc. 5. Usually, […]
adjective 1. of, like, or befitting a sister: sisterly affection. adverb 2. in the manner of a sister; as a sister. adjective 1. of, resembling, or suitable to a sister, esp in showing kindness and affection