- punching unit
- punctuation bit
- punctuation character
- puncture
- punctured
- punctured plane
- pure mathematics
- pure procedure
- pure shear
- purify
- push rod
- push store
- push technology
- push-button
- pushdown list
- pushdown storage
- pyramid charts
- pyramidal roof
- Pythagoras" theorem
- Pythagorean theorem
- quad density
- quadrangular prism
- quadratic congruence
- quadratic formula
- quadratic mean
- quadratic residue
- quadratically integrable
- quadrature encoding
- quadrilateral
- quadripartite
- quadruple
- quadruple register
- quadtree
- qualified call
- quantal response
- quantification theory
- quantify
- quantitative
- quantitative response
- quantity
- quantity determination
- quantity set
- quantization level
- quantization size
- quantize
- quantized system
- quantizing
- quantum computing
- quantum efficiency
- quantum restriction
- quarter
- quarter point
- quarter sawing
- quarter-speed
- quartet
- quartic curve
- quartic quantie
- quarto
- quartz clock
- quasi-analytic
- quasi-conformality
- quasi-convex
- quasi-divisor
- quasi-ideal
- quasi-instruction
- quasi-invariant
- quasi-open
- quasi-ordering
- quasi-ring
- quaternary operator
- quaternion function
- query application
- query instance
- Query Table
- question mark
- queue management
- queue size
- queued depth
- queueing theory
- quibinary
- pulse
- pulse base
- pulse cable
- pulse carrier
- pulse communication
- pulse decoder
- pulse dialing
- pulse distributor
- pulse envelop
- pulse envelope
- pulse jet
- pulse mode
- pulse modulation
- pulse train
- pulse transmitter
- punch
- punch block
- punch code
- punch column
- punched