a rare, trivalent, metallic element obtained from thortveitite. Symbol: Sc; atomic weight: 44.956; atomic number: 21; specific gravity: 3.0.
a rare light silvery-white metallic element occurring in minute quantities in numerous minerals. Symbol: Sc; atomic no: 21; atomic wt: 44.955910; valency: 3; relative density: 2.989; melting pt: 1541°C; boiling pt: 2836°C
scandium scan·di·um (skān’dē-əm)
A highly reactive metallic element found in various rare minerals and separated as a byproduct in the processing of certain uranium ores. Atomic number 21; atomic weight 44.956; melting point 1,541°C; boiling point 2,830°C; specific gravity 2.99; valence 3.
A soft, silvery, very lightweight metallic element that is found in various rare minerals and is a byproduct in the processing of certain uranium ores. It has a high melting point and is used to make high-intensity lights. Atomic number 21; atomic weight 44.956; melting point 1,540°C; boiling point 2,850°C; specific gravity 2.99; valence 3. See Periodic Table.
noun, Chemistry. 1. a white infusible powder, Sc 2 O 3 , soluble in acids.
storage, algorithm A variation of the Scan disk aceess algorithm for use in a real-time environment where, in general, requests are served according to Earliest Deadline First. If two requests share the same deadline, they may be reorganised according to Scan. A typical example is a video server that retrieves video data from a hard […]
The C library routine that reads data from the standard input stream stdin into the locations given by each entry in its argument list. The first argument is a format string which controls interpretation of the input and each subsequent argument points to a variable with a type that corresponds to a type specifier in […]
- Scan line
hardware A horizontal line of pixels generated by a single horizontal sweep of the beam from a monitor’s electron gun. The number of scanlines that make up a frame is the vertical resolution. (1996-02-09)