LINE OF LONGITUDE

Pronunciation (US): (GB):

Meaning:

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

Example:

all points on the same meridian have the same longitude

Synonyms:

line of longitude; meridian

Classified under:

Nouns denoting spatial position

Hypernyms ("line of longitude" is a kind of...):

great circle (a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center)

Hyponyms (each of the following is a kind of "line of longitude"):

observer's meridian (a meridian that passes through the observer's zenith)

prime meridian (meridian at zero degree longitude from which east and west are reckoned (usually the Greenwich longitude in England))

magnetic meridian (an imaginary line passing through both magnetic poles of the Earth)

Instance hyponyms:

date line; dateline; International Date Line (an imaginary line on the surface of the earth following (approximately) the 180th meridian)