scalar

• POS: Adjective, Noun
• HYPHEN: sca=lar

CIDE DICTIONARY

scalar, n. 

 In the quaternion analysis, a quantity that has magnitude, but not direction; -- distinguished from a vector, which has both magnitude and direction.  [1913 Webster]

OXFORD DICTIONARY

scalar, adj. & n. Math. & Physics
--adj. (of a quantity) having only magnitude, not direction.
--n. a scalar quantity (cf. VECTOR).

Etymology

L scalaris f. scala ladder; see SCALE(3)