assistant professor

profesor auxiliar

profesor agregado, profesor auxiliar, profesor asistente

Def: En los Estados Unidos, profesor universitario contratado y cuya situación laboral está por debajo de la de [associate professor] (profesor titular)
Ex: 'Just one letter today!' the mail clerk announced as she handed an envelope to assistant professor of Library Science Leslie Remington.

(n.) = profesor asociado, profesor titular interino
Ex: 'Just one letter today!' the mail clerk announced as she handed an envelope to assistant professor of Library Science Leslie Remington.