a part of this range produced in the same way and having the same quality:
the head register; the upper register of the clarinet.
(in an organ) a stop.
a device for controlling the flow of warmed air or the like through an opening, as from a duct to an interior, composed of a number of narrow, parallel blades, usually behind a grating, that may be adjusted so as to overlap and close the opening.
Photography. proper relationship between two plane surfaces in photography, as corresponding plates in photoengraving.
a precise adjustment or correspondence, as of lines, columns, etc., especially on the two sides of a leaf.
correct relation or exact superimposition, as of colors in color printing.
a bookmark, especially a ribbon attached to the spine of a book.
Linguistics. a variety of language typically used in a specific type of communicative setting:
an informal register; the register of scientific discourse.
Computers. a high-speed storage location in the CPU, used to store a related string of bits, as a word or phrase.
verb (used with object)
to enter or cause to be entered formally in a register.
to cause (mail) to be recorded upon delivery to a post office for safeguarding against loss, theft, damage, etc., during transmission.
to enroll (a student, voter, etc.) in a school or course of study, on the voting rolls, etc.
to indicate by a record, as instruments do:
The thermometer registered 102 degrees today.
to indicate or show, as on a scale.
Printing. to adjust so as to secure exact correspondence; cause to be in register.
Military. to adjust (fire) on a known point.
to show (surprise, joy, anger, etc.), as by facial expression or by actions.
1350-1400;Middle Englishregistre < Middle French,Old French < Medieval Latinregistrum, regestrum, alteration of Late Latinregesta catalog, list, noun use of neuter plural of Latinregestus, past participle of regerere to carry back, pile up, collect, equivalent to re-re + ges-, stem of gerere to bear + -tus past participle suffix; (v.) Middle Englishregistren (< Middle Frenchregistrer) < Medieval Latinregistrāre, derivative of registrum
late 14c., from M.L. registrum, alteration of L.L. regesta "list, matters recorded," from L. regesta, neuter pl. of regestus, pp. of regerere "to record," lit. "to carry back," from re- "back" + gerere "carry, bear." Some senses influenced by association with L. regere "to rule." The verb is attested from late 14c., from O.Fr. registrer (13c.). Cash register is from 1875, from earlier meaning "device by which data is automatically recorded" (1830).
To express with the face and body: I jumped up and registered horror(1901+)
The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D. Copyright (C) 2007 by HarperCollins Publishers. Cite This Source
register in Technology
1. One of a small number of high-speed memory locations in a computer's CPU. Registers differ from ordinary random-access memory in several respects: There are only a small number of registers (the "register set"), typically 32 in a modern processor though some, e.g. SPARC, have as many as 144. A register may be directly addressed with a few bits. In contrast, there are usually millions of words of main memory (RAM), requiring at least twenty bits to specify a memory location. Main memory locations are often specified indirectly, using an indirect addressing mode where the actual memory address is held in a register. Registers are fast; typically, two registers can be read and a third written -- all in a single cycle. Memory is slower; a single access can require several cycles. The limited size and high speed of the register set makes it one of the critical resources in most computer architectures. Register allocation, typically one phase of the back-end, controls the use of registers by a compiled program. See also accumulator, FUBAR, orthogonal, register dancing, register allocation, register spilling. 2. An addressable location in a memory-mapped peripheral device. E.g. the transmit data register in a UART.