positron emission tomography PET | using a computerized radiographic technique to examine the metabolic activity in various tissues (especially in the brain) |
emission emanation | the act of emitting, causing to flow forth |
emitter | the electrode in a transistor where electrons originate |
field-emission microscope | electron microscope used to observe the surface structure of a solid |
light light source | any device serving as a source of illumination, he stopped the car and turned off the lights |
positron emission tomography scanner PET scanner | a tomograph that produces cross-sectional Xays of metabolic processes in the body |
source | a facility where something is available |
source of illumination | any device serving as a source of visible electromagnetic radiation |
ultraviolet lamp ultraviolet source | any source of illumination that emits ultraviolet radiation |
source seed germ | anything that provides inspiration for later work |
source language | a language that is to be translated into another language |
source code | program instructions written as an ASCII text file, must be translated by a compiler or interpreter or assembler into the object code for a particular computer before execution |
source book | a collection of historically important documents published together as a book |
source program | a program written in a language from which statements are translated into machine language |
source | a document (or organization) from which information is obtained, the reporter had two sources for the story |
source materials | publications from which information is obtained |
reference source | a publication (or a passage from a publication) that is referred to, he carried an armful of references back to his desk, he spent hours looking for the source of that quotation |
emission | the occurrence of a flow of water (as from a pipe) |
beginning origin root rootage source | the place where something begins, where it springs into being, the Italian beginning of the Renaissance, Jupiter was the origin of the radiation, Pittsburgh is the source of the Ohio River, communism's Russian root |
point source | a concentrated source (especially of radiation or pollution) that is spatially constricted |
quasar quasi-stellar radio source | a starlike object that may send out radio waves and other forms of energy, many have large red shifts |
radio source | an object that radiates radio waves |
reservoir source | anything (a person or animal or plant or substance) in which an infectious agent normally lives and multiplies, an infectious agent depends on a reservoir for its survival |
generator source author | someone who originates or causes or initiates something, he was the generator of several complaints |
informant source | a person who supplies information |
passive source | an informant who is not assigned to obtain specific intelligence but who routinely passes on whatever information he or she has |
emission spectrum | spectrum of electromagnetic radiation emitted by a self-luminous source |
infrared infrared light infrared radiation infrared emission | electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves |
radio wave radio emission radio radiation | an electromagnetic wave with a wavelength between . cm to , m |
discharge emission expelling | any of several bodily processes by which substances go out of the body, the discharge of pus |
emission | the release of electrons from parent atoms |
field emission | the emission of electrons that are stripped from parent atoms by a high electric field |
nocturnal emission | ejaculation during sleep (usually during a dream) |
photoelectric emission | the release or absorption of quanta above a certain energy level |
secondary emission | the emission of electrons from a surface that is bombarded by higher energy primary electrons |
source | (technology) a process by which energy or a substance enters a system, a heat source, a source of carbon dioxide |
thermionic emission thermal emission | the emission of electrons from very hot substances |
discharge emission | a substance that is emitted or released |
greenhouse gas greenhouse emission | a gas that contributes to the greenhouse effect by absorbing infrared radiation |
source | specify the origin of, The writer carefully sourced her report |
source | get (a product) from another country or business, She sourced a supply of carpet, They are sourcing from smaller companies |
open-source | of or relating to or being computer software for which the source code is freely available |