recti-comb. form
Stress is usually determined by a subsequent element and vowels may be reduced accordingly; see e.g.
rectilinear adj. and n.Origin: A borrowing from Latin. Etymon: Latin recti-.
Etymology: < post-classical Latin recti-, combining form (in e.g. rectilineus rectiline adj.) of classical Latin rectus straight, upright (see rect adj.); compare -i- connective.Found in borrowings and adaptations from Latin and French from the Middle English period onwards, earliest in rectify v. and related words and rectitude n. An isolated formation within English is perhaps found in the 16th cent. (see rectilined adj.); subsequently a very small number of formations are found in the 19th cent. (see rectigrade adj., rectigraph n.). Compare French recti- (formations in which are found from the 19th cent.). Chiefly found with second elements ultimately of Latin origin.
This is a new entry (OED Third Edition, June 2009; most recently modified version published online September 2020).