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Webster 1913 Edition

Adj.

Mutually touching or intersecting;

as,

interosculant

circles

(Biol.)

Uniting two groups; – said of certain genera which connect family groups, or of species that connect genera. See

interosculant ‎(comparative more interosculant, superlative most interosculant)

Mutually touching or intersecting.
interosculant circles
(biology) Uniting two groups; said of certain genera which connect family groups, or of species that connect genera.