Control

GRE 考研

[编辑] 解释

n. 控制; v.控制, 管理; 实验参照组, 实验参照标准
［英］控制 ( power or authority to direct, order or limit) 控制, 管理 ( have power or authority over SB / sth)
［类］反义词: group experimented on ( 用于实验的一组)

I. verb (controlled; controlling)

Etymology: Middle English countrollen, from Anglo-French contrerouler, from contreroule copy of an account, audit, from Medieval Latin contrarotulus, from Latin contra- + Medieval Latin rotulus roll — more at roll
Date: 15th century
transitive verb
- 1.
  - a. archaic to check, test, or verify by evidence or experiments
  - b. to incorporate suitable controls in controlled experiment
- 2.
  - a. to exercise restraining or directing influence over ; regulate
  - b. to have power over ; rule
  - c. to reduce the incidence or severity of especially to innocuous levels <control an insect population<control a disease
intransitive verb
- to incorporate controls in an experiment or study — used with for<control for socioeconomic differences
Synonyms: see conduct
? controllability noun
? controllable adjective
? controlment noun

II. noun

Usage: often attributive
Date: 1590
1.
- a. an act or instance of controlling; also power or authority to guide or manage
- b. skill in the use of a tool, instrument, technique, or artistic medium
- c. the regulation of economic activity especially by government directive — usually used in plural<price controls
- d. the ability of a baseball pitcher to control the location of a pitch within the strike zone
2. restraint, reserve
3. one that controls: as
- a.
  - (1) an experiment in which the subjects are treated as in a parallel experiment except for omission of the procedure or agent under test and which is used as a standard of comparison in judging experimental effects — called also control experiment
  - (2) one (as an organism, culture, or group) that is part of a control
- b. a device or mechanism used to regulate or guide the operation of a machine, apparatus, or system
- c. an organization that directs a spaceflight <mission control
- d. a personality or spirit believed to actuate the utterances or performances of a spiritualist medium
Synonyms: see power