focuser

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noun

A device which allows one to adjust the focus of an instrument such as a telescope.

“I decided to upgrade my telescope with a feather-touch focuser.”

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Meanings

nounfocuser (plural focusers)

plural focusers

  1. A device which allows one to adjust the focus of an instrument such as a telescope.

    I decided to upgrade my telescope with a feather-touch focuser.

Origin

From focus + -er.

Full word history & related roots →

Rhymes & wordplay

Anagrams

refocus
Cite this entry
APA

focuser. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/focuser

MLA

“focuser.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/focuser. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “focuser,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/focuser.

Source: focuser on Wiktionary, CC BY-SA 4.0.