緯 means “latitude, weft”

い · i

Also: horizontal, woof, left & right, (parallels of) latitude

Kun'yomi (Japanese reading)
よこいと, ぬき
On'yomi (Chinese reading)
イ

JLPT N1 · Taught in secondary school · 16 strokes

The story

Thread (糸) beside 韋, as in 偉 and 違: the weft threads woven back and forth across a loom. 緯 is latitude, the lines that run east to west: 北緯 is north latitude, and 経緯, warp and weft, is how something came about.

Used in 緯度 (ido, latitude), 北緯 (hokui, north latitude), and 経緯 (keii, the circumstances/how it happened)

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Readings from KANJIDIC2, © EDRDG, CC BY-SA.