Definition of prefocus in English:

prefocus

Syllabification: pre·fo·cus
Pronunciation: /ˌprēˈfōkəs
 
/

adjective

[attributive]
Relating to or denoting a light bulb that is designed so that its beam is focused automatically when it is fitted inside a lamp, especially a vehicle headlamp.

Definition of prefocus in:

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Word of the day inamorata
Pronunciation: inˌaməˈrätə
noun
a person's female lover