(electronics) an electronic circuit used to lock an oscillator in phase with an arbitrary input signal

(chemistry) A process in which the rate of a reaction in a heterogeneous two-phase system is enhanced by the addition of a substance that transfers one of the reactants across the interface between the two phases.

A form of light microscopy in which small differences in refractive index of a transparent specimen are converted into amplitude (contrast) differences in the final image.

Alternative spelling of phase-shift keying

A form of phase modulation in which digital information is transmitted through discrete changes of the phase of a carrier wave.

plural of phase-locked loop

plural of phase contrast microscope

(distributed computing) A commit operation that has two main steps: requesting the components of a distributed system to notify whether they are able to apply the commit and notify the components to apply it (if all of them notified that they are able to) or to abort it otherwise.

(chemistry) A catalyst that migrates a reactant across a phase boundary

(biochemistry, immunology) Any of a class of proteins whose plasma concentrations change in response to inflammation, such as C-reactive protein.