subcostal plane n.
A horizontal plane passing through the lower limits of the tenth costal cartilages, marking the boundary between the hypochondriac and epigastric regions and between the lateral and umbilical regions.
noun, Mathematics. 1. a set of subsets of a cover of a given set that also is a cover of the set.
subcrepitant sub·crep·i·tant (sŭb-krěp’ĭ-tənt) adj. Nearly or faintly crepitant. Used of a rale.
adjective 1. Physics. pertaining to a state, value, or quantity that is less than critical, especially to a mass of radioactive material. 2. being of less than critical importance. adjective 1. (physics) (of a nuclear reaction, power station, etc) having or involving a chain reaction that is not self-sustaining; not yet critical
adjective, Geology. 1. situated or occurring below the crust of the earth.