She looked at him curiously - at his ugly tweed suit, his yellow boots, and up into the strong, forceful face with eyes set in deep hollows under his protruding brows, at the heavy jaws giving a certain coarseness to his expression, which his mouth and forehead, well-shaped though they were, could not altogether dispel.
Definition of Expression. An Expression is a mathematical phrase that combines numbers and/or variables using mathematical operations. An expression is a representation of a value; for example, variables and/or numerals that appear alone or in combination with operators are expressions.
expression noun. âº [C] a word or âgroup of words having a âparticular âmeaning or used in a âparticular way: That was an expression he hadnât âheard before, and âwondered what it âmeant. âº mathematics [C] An expression is also a mathematical âstatement that âincludes ânumbers, âsymbols, or both.