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Webster’s Dictionary (1828)

98,828 entries. Headwords are matched first, then definition text.

3 words match “SUBCARBONIFEROUS”

SUBCARBONIFEROUS a. 2 definitions
The Subcarboniferous period or formation.
ARCHIMEDES n.
An extinct genus of Bryzoa characteristic of the subcarboniferous rocks. Its form is that of a screw.
CARBONIFEROUS a.
erized by the vegatation which formed the coal beds. This age embraces three periods, the Subcarboniferous, the Carboniferous, and Permian. See Age of acrogens, under Acrogen. -- Carboniferous formation (Geol.), the series of rocks (including sandstones, shales, limestones, and conglomerates, with beds of coal) which…