Arctic Circle 
The parallel of latitude 66° 33ʹ north of the equator. It marks the northernmost point at which the sun is visible at the northern winter solstice and the southernmost point at which the midnight sun can be seen at the northern summer solstice.
- strong hand
- strong-handed
- strongheaded
- stronghold
- stronghouse
- strong interaction
- strongish
- strong joint
- strongle
- strong-like
- strongly
- strongman
- strong man's weed
- strong meat
- strong-minded
- strong-mindedness
- strongness
- strong on
- strongpoint
- strongroom
- strong safety
- strong side
- strong silent man
- strong silent type
- strong-smelling