obtain, obtain a root, obtain access, obtainable, obtuse, obtuse angle, obtuse triangle, obverse, obverse side, obvious, obviously, occasion, occasional, occasionally, occlude, occupancy, occupancy problems, occupy, occur, occur(r)ence, ocean gray, ocher, ochre, OCR-A font, Oct, octad, octagon, octagonal, octahedral, octahedron - Англо-український словник технічних термінів - Іншомовні словники