widthwise

/ˈwɪdθˌwaɪz/
adverb
  1. In the direction of the width; from side to side.
    • Fold the paper widthwise before cutting it.
    • The table expands widthwise to seat more people.
    • She measured the box widthwise to ensure it would fit on the shelf.
Antonyms
adjective
  1. Oriented or measured in the direction of the width.
    • The widthwise stripes on the shirt make it look broader.
    • The widthwise dimension of the room is 15 feet.
    • Use a widthwise fold to make the card fit the envelope.
What does "widthwise" mean? | whatsthatwordmean | whatsthatwordmean