adjective fos·ter \ˈfs-tər, ˈfäs-\

—used to describe a situation in which for a period of time a child lives with and is cared for by people who are not the child's parents

Full Definition of FOSTER

:  affording, receiving, or sharing nurture or parental care though not related by blood or legal ties

Origin of FOSTER

Middle English, from Old English fōstor-, from fōstor food, feeding; akin to Old English fōda food
First Known Use: before 12th century



: to help (something) grow or develop

: to provide the care that a parent usually gives to a child : to be or become the foster parent of a child

fos·teredfos·ter·ing \-t(ə-)riŋ\

Full Definition of FOSTER

transitive verb
:  to give parental care to :  nurture
:  to promote the growth or development of :  encourage <fostered the college in its early years>
fos·ter·er \-tər-ər\ noun

Examples of FOSTER

  1. Such conditions foster the spread of the disease.
  2. Would you consider fostering a child?

First Known Use of FOSTER

12th century

Rhymes with FOSTER


biographical name Fos·ter \ˈfs-tər, ˈfäs-\

Definition of FOSTER

Stephen Collins 1826–1864 Am. songwriter


biographical name

Definition of FOSTER

William Z(ebulon) 1881–1961 Am. Communist


biographical name

Definition of FOSTER

William Zebulon 1881–1961 Am. Communist


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