electromagnet

Từ điển Oxford Learners Wordfinder Dictionary

noun

a temporary magnet made by coiling wire around an iron core;
when current flows in the coil the iron becomes a magnet (Freq. 1)
• Hypernyms:
magnet
• Hyponyms:
magnetic head
• Part Holonyms:
electric bell, relay, electrical relay
• Part Meronyms:
armature