WordNet: line of longitude, meridian
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"
- hypernym great circle
- hyponym observer's meridian
- hyponym prime meridian
- hyponym magnetic meridian
line of longitude
- (suomi) pituuspiiri (synonyymi)
meridian
- (englanti) meridional (derivationally related)
- (suomi) meridiaani (synonyymi)