If p and q are statements, then ‘p not or q’, denoted by p ↓ q, is true only when both p and q are false. Since ‘not or’ is cumbersome language, this is often referred to as ‘nor’ in logic. The truth table is as follows:
- deterministic model
- deterministic Turing machine
- deterrents to entry
- deterritorialization
- detonating gas
- detonation
- detoxification
- detrending
- detrital
- detrital remanent magnetization
- detritivore
- detritus
- detritus feeder
- detrusor muscle
- Dettingen, Battle of (27 June 1743)
- detune
- DEUCE
- deus ex machina
- deus sive natura
- deuteranopia
- deuterated compound
- deuteric alteration
- deuteric reaction
- deuterium
- deuterium oxide