| selenium. |
| a prefix occurring in loanwords from Latin, where it meant “apart”: seduce; select. |
[south-eest; Naut. sou-eest] 
| 1. | the point or direction midway between south and east. Abbreviation: SE |
| 2. | a region in this direction. |
| 3. | (initial capital letter) the southeast region of the United States. |
| 4. | lying toward, situated in, or directed toward the southeast. |
| 5. | coming from the southeast, as a wind. |
| 6. | in the direction midway between south and east. |
| Se The symbol for the element selenium. |
| SE abbr.
|
| se·le·ni·um (sĭ-lē'nē-əm) n. Symbol Se A nonmetallic element, red in powder form, black in vitreous form, and metallic gray in crystalline form, resembling sulfur and obtained primarily as a byproduct of electrolytic copper refining. It is widely used in rectifiers, as a semiconductor, and in xerography. Its photovoltaic and photoconductive actions make it useful in photocells, photographic exposure meters, and solar cells. Atomic number 34; atomic weight 78.96; melting point (of gray selenium) 217°C; boiling point (gray) 684.9°C; specific gravity (gray) 4.79; (vitreous) 4.28; valence 2, 4, or 6. See Table at element. [Greek selēnē, moon (from selas, light, brightness) + -ium.] |
| south·east (south-ēst', sou-ēst') n.
south·east'ern adj. |
Se
The symbol for the element selenium.
| Se
The symbol for selenium. |
| selenium (sĭ-lē'nē-əm) Pronunciation Key
Symbol 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. |
SE
1.
2. IBM Systems Engineer.
(1998-07-08)
se networking
The country code for Sweden.
(1999-01-27)
| Se selenium |
SE
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