spécialisait
Spécialisait is the imperfect tense form of the French verb specialiser, meaning to specialize. It is used to describe a past, ongoing or repeated action where the subject focused on a particular field, activity, or product. In concrete terms, it can refer to a person, company, or organization directing its efforts toward a specific area.
Grammatical notes: specialiser is a regular -er verb. The imperfect endings are -ais, -ais, -ait, -ions, -iez,
Etymology and usage: the word derives from the French base spécial, from Latin specialis, through the development