See Also: nielsbohrium(dictionary)

Silurian (iou) and nielsbohrium (iou)


Silurian (iou)



Silurian adjective & noun2. In senses A.3, B.2 also silurian. E18.
[from Latin Silures (= sense 1 below) + -IAN.]
A. adjective.
Of or belonging to an ancient British tribe of SE Wales, or the region they inhabited. E18.
Geology. Designating or pertaining to the third period of the Palaeozoic era, following the Ordovician (which it was originally regarded as including) and preceding the Devonian, in which corals and eurypterids flourished and fish and land plants diversified. M19.
b. loosely. Belonging to the remote past; primitive, prehistoric. L19.
Pertaining to or designating paper or stationery with a mottled appearance, esp. of a mainly blue-grey colour. L19.
b. noun.
Geology. The Silurian period; the system of rocks Dating from this time. M19.
Silurian paper or stationery. M20.

nielsbohrium (iou)



nielsbohrium noun. L20.
[from Niels BOHR + -IUM.]
A name proposed for the chemical elements of atomic number 104 (now called rutherfordium) and (later) 107 (now called bohrium).