Where did the word electricity originate from

The New Latin adjective electricus, originally meaning 'of amber', was first used to refer to amber's attractive properties by William Gilbert in his 1600 text De Magnete. The term came from the classical Latin electrum, amber, from the Greek ἤλεκτρον (elektron), amber.[1] The origin of the Greek word is unknown, but there is speculation that it might have come from a Phoenician word elēkrŏn, meaning 'shining light'. The letter Q was used for electric charge instead of the letter E because the letter was already used to represent the electron.[citation needed]