Ento is defined as within.
(prefix)An example of ento is entomb, which means to bury.
See ento- in Webster's New World College Dictionary
Origin: ModL < Gr entos, within < IE *entos < base *en-, in
See ento- in American Heritage Dictionary 4
or ent-
prefixOrigin:
Origin: New Latin
Origin: , from Greek entos, within; see en in Indo-European roots
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