| magnetic variations | (n) ค่าความแตกต่างระหว่างทิศเหนือของเข็มทิศและทิศเหนือจริงๆ, Syn. magnetic declination |
| magnetic declination | (n) the angle (at a particular location) between magnetic north and true north, Syn. magnetic variation, variation |
| magnetic variation | n. Same as magnetic declination. [ WordNet 1.5 ] |