linear

adj. १ (as, following a straight course; being or going in a straight direction; consisting of or arranged in a line) रेषीय, रेखीय, एकरेषीय २ Math. एकघात (as in : linear equation एकघात समीकरण) ३ Math. प्रथमघात (as in linear expression प्रथमघात पदावली)