[ in-struhk-ter ]
/ ɪnˈstrʌk tər /


a person who instructs; teacher.
a teacher in a college or university who ranks below an assistant professor.

Origin of instructor

1425–75; late Middle English < Latin, equivalent to instruc-, variant stem of instruere (see instruct) + -tor -tor

Related forms

in·struc·to·ri·al [in-struhk-tawr-ee-uhl, -tohr-] /ˌɪn strʌkˈtɔr i əl, -ˈtoʊr-/, adjectivein·struc·tor·ship, nounself-in·struc·tor, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for instructor

British Dictionary definitions for instructor


/ (ɪnˈstrʌktə) /


someone who instructs; teacher
US and Canadian a university teacher ranking below assistant professor

Derived Forms

instructorship, nouninstructress (ɪnˈstrʌktrɪs), fem n
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012