1 (verbally, non-verbally) expresar ideas, feelings, opinion
I haven't the words to express my thoughts this expresses exactly the meaning of the word you cannot express that so succinctly in French
her eyes expressed annoyance sus ojos expresaban irritación
they hooted their car horns to express their disapproval
they expressed interest in ... expresaron su interés en ...; he expressed his surprise at the result expresó su sorpresa ante el resultado; I'd like to express my thanks to everyone for ... quiero expresar mi agradecimiento a todos por ...; she had expressed a wish to meet them había manifestado su deseo de conocerlos; to express o.s. expresarse; to express o.s. in or through [+art, music etc] expresarse a través de
to express o.s. [in] music to express o.s. [through] art he could express himself more freely outside the office to express o.s. [in] French I expressed myself better in French. a child's often expresses its feelings by crying that increased confidence expressed [itself] in other ways to express [o.s.] The children had a big open space in which to express themselves
3 (Mat) (represent) expresar here it is expressed as a percentage aquí está expresado en forma de porcentaje