in line /ɪnˈlaɪ̯n/adjective 9adverb 1forms 2 adjective9 •Consisting of parts arranged in a single line. •Suitable or appropriate; keeping with expectations, norms, ideals, or rules."[Plant] rescues are usually organized by local garden clubs, but before you grab your shovel and head for the door, check with local government agencies to make sure you're in line with regulations." — 2006 •In a queue, waiting one's turn. •Assuming a position in the future.He's third in line to be president.He's in line to be the fastest runner of all time. •Having all cylinders in a single straight line; straight. •Of three or more objects, positioned in a straight line.Please stand in line for the pledge of allegiance. •Inserted in the flow of a text.An in-line mathematical formula does not have to be on a line of its own.Parenthetical referencing is a citation style which uses in-line citations enclosed within parentheses. •Of a different language than the outer enclosing code.BBC BASIC allows the programmer to write in-line assembly language. •Of a style: inserted in the style attribute of an HTML element instead of in a separate stylesheet. adverb1 •One behind another; in a queue.I'm waiting in line at the bakery. formsmore in line · most in line