Countable noun; also used attributively.
A short-circuit in the wiring tripped the breaker.
Un court-circuit dans le câblage a déclenché le disjoncteur.
Attributive/relational adjective used mainly in technical contexts; no comparison forms.
de court-circuitEmploi technique. The technician measured the short-circuit current.
Le technicien a mesuré le courant de court-circuit.