a type of star showing bright emission lines superimposed on its normal absorption spectrum, presumably caused by a gaseous shell around the star.
(astronomy) a type of star, usually of spectral type B to F, surrounded by a gaseous shell
noun, Cookery. 1. a porterhouse steak with the fillet removed. noun a tender steak cut from the short loin; also called [club steak], New York steak Usage Note cooking
- Shell suit
noun 1. a lightweight tracksuit consisting of an inner cotton layer covered by a waterproof nylon layer
- Shell variable
programming, operating system One of the variables accessible to a Unix shell process, including environment variables (e.g. $HOME), command line arguments (e.g. $1) and local variables (e.g. $input_file). Other operating systems have similar variables. (1999-01-26)
noun 1. decorative work composed of seashells: an elaborate picture frame decorated with shellwork.