prefocus
Intermediate (B1)
IPA: //ˈpriːˌfoʊkəs//
KK: /ˈpriːˌfoʊkəs/
adjective
Definition
Describing a light source that is arranged to be in focus when installed, particularly in vehicles.
Example
The prefocus lamp provided excellent illumination for the road ahead.
Conversation
Have you seen the new headlights they installed on my car?
Yeah, they look great! Are they prefocus lights?
Exactly! They really help with visibility at night.
That’s awesome! I need to get a set like that for my car.
Synonyms & Antonyms
Synonyms
focused
directed
aimed
Antonyms
blurry
diffused
scattered
verb
Definition
To adjust or set the focus of something in advance, such as preparing headlights before they are installed.
Example
The technician will prefocus the headlights to ensure they shine correctly on the road.
Tense Forms
Past: prefocused
Past Participle: prefocused
Conversation
Have you ever thought about how to prefocus your headlight beams before installing them?
Yeah, I heard it makes a huge difference in visibility at night.
Exactly! It really helps to prefocus them for a clearer view.
Root Explanation
Prefocus → It is formed from "pre-" (meaning before) and "focus" (from Latin "focus", meaning hearth or center). The word "prefocus" means to focus on something before it is actually needed or to set a focus in advance.
Memory Tip
Think of setting your focus 'before' ('pre-') you need it — that's what prefocus means.
Visually Confused Words
refocus