circuit meaning
EN
[-ɜː(r)kɪt] 
US WCircuit
- Circuit may mean:
- Circuit theory, the theory of accomplishing work by routing electrons, gas, fluids, or other matter through loops (e.g., electrical, hydraulic or pneumatic circuits)
- In electrical engineering
- Electrical circuit, a complete electrical network that has a closed loop giving a return path for the current
- Circuit analysis, the process of finding the voltages across, and the currents through, every component in an electrical circuit
- Electronic circuit, active electronic components connected in a circuit
FR circuit 
- NounPLcircuits
- The act of moving or revolving around, or as in a circle or orbit; a revolution; as, the periodical circuit of the earth around the sun.
- The circumference of, or distance around, any space; the measure of a line around an area.
- So the circuit or compass of Ireland is 1,800 miles, which is 200 less than Caesar doth reckon or account.
- That which encircles anything, as a ring or crown.
- And this fell tempest shall not cease to rage Until the golden circuit on my head, Like to the glorious sun's transparent beams, Do calm the fury of this mad-bred flaw.
- The space enclosed within a circle, or within limits.
- "Fondling," she saith, "since I have hemm'd thee here Within the circuit of this ivory pale, I'll be a park, and thou shalt be my deer: Feed where thou wilt, on mountain, or in dale; Graze on my lips; and if those hills be dry, Stray lower, where the pleasant fountains lie.
- (electricity) Enclosed path of an electric current, usually designed for a certain function.
- A regular or appointed journeying from place to place in the exercise of one's calling, as of a judge, or a preacher.
- (law) A certain division of a state or country, established by law for a judge or judges to visit, for the administration of justice.
- (law) Abbreviation of circuit court.
- (Methodist Church) A district in which an itinerant preacher labors.
- By analogy to the proceeding three, a set of theaters among which the same acts circulate; especially common in the heyday of vaudeville.
- (obsolete) circumlocution.
- The act of moving or revolving around, or as in a circle or orbit; a revolution; as, the periodical circuit of the earth around the sun.
- VerbSGcircuitsPRcircuitingPT, PPcircuited
- More Examples
- Used in the Middle of Sentence
- In what city is the circuit court sitting for this session.
- A clock synchronizing circuit for repeaterless low swing interconnects is presented in this paper.
- Consequently, pharmacological compounds in cordyceps may be associated with neurotrophic effects, which regulate behavioral sensitization and reward circuits of drug addiction.
- Used in the Middle of Sentence
Definition of circuit in English Dictionary
- Part-of-Speech Hierarchy
- Nouns
- Countable nouns
- Countable nouns
- Verbs
- Intransitive verbs
- Intransitive verbs
- Nouns
- fr circuit
- en circuitous
- en circuitry
- fr circuité
- fr circuits
Source: Wiktionary
Grammatically, this word "circuit" is a noun, more specifically, a countable noun. It's also a verb, more specifically, an intransitive verb.