linear
Pronunciation: /ˈlɪnɪə/
adjective
- 1arranged in or extending along a straight or nearly straight line: linear movement
- consisting of or predominantly formed using lines or outlines: simple linear designs
- involving one dimension only: linear elasticity
- Mathematics able to be represented by a straight line on a graph: linear functions
- Mathematics involving or exhibiting directly proportional change in two related quantities: linear relationship

Origin:
mid 17th century: from Latin linearis, from linea 'a line' (see line1)