Se
Symbol, Chemistry.
Definition for se (2 of 3)
Definition for se (3 of 3)
se-
a prefix occurring in loanwords from Latin, where it meant “apart”: seduce; select.
Origin of se-
< Latin
sē(d) (preposition),
sē- (prefix) without, apart
Example sentences from the Web for se
British Dictionary definitions for se (1 of 3)
se
the internet domain name for
Sweden
British Dictionary definitions for se (2 of 3)
Se
the chemical symbol for
selenium
British Dictionary definitions for se (3 of 3)
SE
symbol for
southeast(ern)
Medical definitions for se
Se
The symbol for the elementselenium
Scientific definitions for se (1 of 2)
Se
The symbol for selenium.
Scientific definitions for se (2 of 2)
selenium
[ sĭ-lē′nē-əm ]
Se
A nonmetallic element that occurs in a gray crystalline form, as a red powder, or as a black glassy material. It is highly photosensitive and can be used to convert light into electricity. Its ability to conduct electricity also increases with higher exposure to light. For these reasons selenium is used in photocopying technology, photography, and solar cells. Atomic number 34; atomic weight 78.96; melting point 217°C; boiling point 684.9°C; specific gravity (gray) 4.79; (red) 4.5; (black) 4.28; valence 2, 4, or 6. See Periodic Table.