English
semimeridian
From semi- + meridian.
Today it means
noun The intersection of a surface of revolution and a half-plane through its centre
Sources
Sources: Wiktionary, “semimeridian”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / semimeridian