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Webster 1913 Edition

Posttertiary

Post-ter′ti-a-ry

,

Adj.

[Pref.

post-

+

tertiary

.]

(Geol.)

Following, or more recent than, the Tertiary; Quaternary.

Definition 2024

posttertiary

posttertiary

English

Adjective

posttertiary ‎(not comparable)

(geology) Following, or more recent than, the Tertiary.