Word Study
siltstone |
silty |
silundum |
silure |
silurian |
silurian period
| silurid
| silurid fish
| siluridae
| siluridan
| siluriform fish
silurian period
WORDNET DICTIONARY
Noun silurian period has 1 sense
- silurian period(n = noun.time) silurian - from 425 million to 405 million years ago; first air-breathing animals; Array is a part of paleozoic, paleozoic era
is a kind of geological period, period
For further exploring for "silurian period" in Webster Dictionary Online
