a combining form meaning “old age,” used in the formation of compound words: gerontology.
Also especially before a vowel, geront-.
Origin of geronto-
< Greek, combining form representing geront-, stem of gérōn old man
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
before a vowel geront-
indicating old agegerontology; gerontophilia
Word Origin for geronto-
from Greek gerōn, geront- old man
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