line of longitude

1. 1.

   an imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator

   “all points on the same meridian have the same longitude”

   Synonymsmeridian

   Broadergreat circle

   Narrowerobserver's meridianprime meridianmagnetic meridiandateline

Questions about line of longitude

What does line of longitude mean?

line of longitude means "an imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator".

What is another word for line of longitude?

Close synonyms include meridian. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is line of longitude a common word?

line of longitude is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.