Definition/Meaning  Word/Phrase 
physicist born in Germany who formulated the special theory of relativity and the general theory of relativity; Einstein also proposed that light consists of discrete quantized bundles of energy (later called photons) (18791955) 
Albert Einstein
,
Einstein

(chemistry) any theory in which all matter is composed of tiny discrete finite indivisible indestructible particles 
atomic theory
,
atomism
,
atomistic theory
,
atomist theory

discrete unit of living matter 
biont

exists as discrete unit, something that 
entity

operant conditioning that pairs a response with a reinforcement in discrete trials; reinforcement occurs only after the response is given 
instrumental conditioning

Markov process for which the parameter is discrete time values 
Markoff chain
,
Markov chain

small discrete mass of solid or liquid matter that remains individually dispersed in gas or liquid emissions (usually considered to be an atmospheric pollutant) 
particulate
,
particulate matter

(computer science) the smallest discrete component of an image or picture on a CRT screen (usually a colored dot) 
pel
,
picture element
,
pixel

(physics) the smallest discrete quantity of some physical property that a system can possess (according to quantum theory) 
quantum

discrete amount of something that is analogous to the quantum in quantum theory 
quantum

(physics) a physical theory that certain properties occur only in discrete amounts (quanta) 
quantum theory

motor (especially an electric motor) that moves or rotates in small discrete steps 
stepper
,
stepping motor
