North·amp·ton 
(nôr-thămptən, nôrth-hămp-)
(nôr-thămptən, nôrth-hămp-) A borough of central England north-northwest of London. Its Norman castle was the meeting place for parliaments from the 1100s to the 1300s.
- differential
- differential analyzer
- differential calculus
- differential coefficient
- differential equation
- differential gear
- differentially
- differential rate
- differentiate
- differentiation
- differently
- differently abled
- differentness
- difficult
- difficultly
- difficulty
- diffidence
- diffident
- diffidently
- diffract
- diffraction
- diffraction grating
- diffractive
- diffractively
- diffractiveness