adjective Date: 1843 being a mechanical linkage or equivalent device designed to produce or copy motion in a straight line, having the principal parts arranged in a straight line, marked by a uniform spread and especially in equal segments over a given term , occurring, measured, or made in or along a straight line
STRAIGHT-LINE
Meaning of STRAIGHT-LINE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012