From Longman Dictionary of Contemporary Englishlengthwiselength‧wise /ˈleŋθwaɪz/ (also lengthways /-weɪz/ British English) adverb LONGin the direction or position of the longest side Lay the bricks lengthwise.
Examples from the Corpus
lengthwise• Slice each banana lengthwise.• The strip of mahogany has the grain running lengthwise.• She cut lengthwise along the arm and missed the main arteries.• The sections were divided lengthwise into 10 µm segments, and the grade of injury was determined for each segment.• Opening the brown skin with his fingernail, Mitchell peeled a plantain and sliced the dry-smelling fruit lengthwise into strips.• Peel the ginger, slice thinly with the grain, and cut the slices lengthwise into thin shreds.• Use scissors to cut the carnation stem lengthwise into three.• Slice each eggplant lengthwise twice from blossom end almost to stem end, making 4 finger-like slices attached at base.• Split potato in half lengthwise with a fork. 