English ⇄ Serbian +

linear [ˈlɪniə] adj.
metrol.	линеарна ... густина; линеарно; линијско
English thesaurus
linear ['lɪnɪə] abbr.
abbr.	lin
abbr., polym.	l.; lin.
LINEAR ['lɪnɪə] abbr.
abbr., mil., avia.	Lincoln Near Earth Asteroid Research

linear : 26 phrases in 5 subjects

Electricity generation	1	Mathematics	18	Vacuum tubes	2
Electronics	2	Metrology	3