electro-

Initially from French électro- and Latin electro-, ultimately from electrum, from Ancient Greek ἤλεκτρον (ḗlektron, “amber”). Equivalent to and later based upon electric, electricity, &c. + -o-.

electro-

1. Combining form of electricity.
2. Combining form of electric and electrical.
3. Combining form of electronic.

• galvano- (dated or specific applications)

• Elector, corelet, elector

Borrowed from Latin electrum, from Ancient Greek ἤλεκτρον (ḗlektron, “amber”) (a natural resin, which — when rubbed — produces static electricity).

• IPA^(key): (Central) [əˌlɛk.tɾu]
• IPA^(key): (Balearic) [əˌlɛk.tɾo]
• IPA^(key): (Valencia) [eˌlɛk.tɾo]

electro-

1. electro-; combining form of elèctric

• magneto-

• “electro-”, in Diccionari de la llengua catalana [Dictionary of the Catalan Language] (in Catalan), second edition, Institute of Catalan Studies [Catalan: Institut d'Estudis Catalans], April 2007

• IPA^(key): /ˌeːˈlɛk.troː/

electro-

1. superseded spelling of elektro-

electro-

1. electro-

From

.

• “electro-”, in Dicionario da Real Academia Galega (in Galician), A Coruña: Royal Galician Academy, 2012–2026

electro-

1. pre-reform spelling (used until 1943 in Brazil and 1990 in Portugal) of eletro-; still used where the agreement hasn’t come into effect and may occur as a sporadic misspelling

• “electro-”, in Dicionário Aulete Digital (in Portuguese), Rio de Janeiro: Lexikon Editora Digital, 2008–2026
• “electro-”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2026

electro-

1. electro-

• “electro-”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025