silurian — SILURIÁN, Ă, silurieni, e, s.n., adj. 1. s.n. A treia perioadă a erei paleozoice care se caracterizează prin sedimentări de calcar, de gresie, de şisturi argiloase, prin apariţia primelor plante terestre şi prin dezvoltarea nevertebratelor marine … Dicționar Român
Silurian — [si loor′ē ən, sīloor′ē ən] adj. 1. of the Silures 2. [because the rocks were first found in an area in SE Wales: see SILURES] [sometimes s ] designating or of the third geologic period of the Paleozoic Era, characterized by the development of… … English World dictionary
Silurian — Si*lu ri*an, n. The Silurian age. [1913 Webster] … The Collaborative International Dictionary of English
Silurian — 1708, pertaining to the Silures, from L. Silures ancient British tribe inhabiting southeast Wales. Geological sense is from 1835, coined by Sir Roderick Impey Murchison (1792 1871) because rocks of this period are especially frequent in Wales … Etymology dictionary
Silurian — ► ADJECTIVE Geology ▪ referring to the third period of the Palaeozoic era (between the Ordovician and Devonian periods, about 439 to 409 million years ago), a time when the first fish and land plants appeared. ORIGIN from Silures, the Latin name… … English terms dictionary
Silurian — Geological period from=444 middle=429 to=416 o2=14 co2=4500 temp=17The Silurian is a geologic period and system that extends from the end of the Ordovician period, about 443.7 ± 1.5 Ma (million years ago), to the beginning of the Devonian period … Wikipedia
Silurian — adjective Etymology: Latin Silures Date: 1708 1. of or relating to the Silures or their place of habitation 2. of, relating to, or being a period of the Paleozoic era between the Ordovician and Devonian or the corresponding system of rocks marked … New Collegiate Dictionary
Silurian — a geological period within the Palaeozoic ca. 441 113 million years ago. Most of the major groups of fishes are thought to have originated in the Early Silurian. Abbreviated as S … Dictionary of ichthyology
Silurian — /si loor ee euhn, suy /, adj. 1. of or pertaining to the Silures or their country. 2. Geol. noting or pertaining to a period of the Paleozoic Era, occurring from 425 to 405 million years ago, notable for the advent of air breathing animals and… … Universalium
Silurian — 1. adjective Of a geologic period within the Paleozoic era; comprises the Llandovery, Wenlock, Ludlow and Pridoli epochs from about 439 to 409 million years ago. 2. noun … Wiktionary
