intransitive verb
self-re·​new | \¦self-ri-¦n(y)ü \
self-renewed; self-renewing; self-renews

Definition of self-renew 

: to renew oneself or itself Stem cells are multipotential cells that have the capacity to proliferate in an undifferentiated state, to self-renew, and to give rise to all the cell types of a particular tissue.— Steve S. W. Han et al., Journal of the American Medical Association, 3 May 2000

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Other Words from self-renew

self-renewal \¦self-​ri-​¦n(y)ü-​əl \ noun plural self-renewals
For a long time it has been assumed that heart muscle cells are incapable of self-renewal. — Lisa Melton, New Scientist, 25 Sept. 2004 If we are less than bold in addressing these problems—through self-renewal within our community and by pressing the powers-that-be for resources to make a difference—then we risk losing an entire generation. — Maxine Waters, Elle, May 1993
self-renewing adjective
self-renewing stem cells American diction constantly crosses over class lines, which is what makes it so refreshingly democratic and self-renewing. — Güneli Gün, Times Literary Supplement, 12 Mar. 1999

First Known Use of self-renew

1970, in the meaning defined above

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a soft lustrous wool fabric with mohair

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