adj, verb ·Rare ·Advanced level

Definitions

Verb

1. 1
   To focus in advance

Adjective

1. 1
   Describing a lamp whose light source is positioned to be in focus when fitted (especially in a motor car) not-comparable

Etymology

From pre- + focus.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.