polar line
/ˌpəʊlə ˈlʌɪn/noun
1A line passing through a pole or related to a (geographic or magnetic) pole; especially a line joining north and south magnetic poles.
2 Geometry = polar.
Origin
Mid 17th century (in an earlier sense). From polar + line.
- aeration
- aerator
- aereated
- aerenchyma
- aerenchymatous
- aerial
- aerial acid
- aerial architecture
- aerialist
- aeriality
- aerial ladder
- aerially
- aerial perspective
- aerial ping-pong
- aerial plankton
- aerial propeller
- aerial root
- aerial screw
- aerial skiing
- aerial topdressing
- Aerian
- aeriated
- aerie
- aeriferous
- aerification