The word is in the Wiktionary

2 short excerpts of Wiktionnary (A collaborative project to produce a free-content dictionary.)

— English words —

• optical␣astronomy n. (Informal) Astronomy using observations using telescopes and recording media that capture visible light.
• optical␣astronomy n. (Astronomy) Astronomy using infrared, visible, and/or ultraviolet wavelengths.

17 English words from 2 English definitions

and and/or Astronomy capture Informal infrared light media observations recording telescopes that ultraviolet using visible visible␣light wavelengths

66 words-in-word (Words found as is inside the word. Minimum size 3 letters.)

ala Ala ALA Ala. a␣la à␣la alas Alas. ast Ast AST -ast as't astro Astro astro- ASTRON astron. astronomy cal Cal cal. Cal. Cala calas Calas ICA -ica -ical las LAs last Last nom NOM -nom no'm nom- nom. -nomy omy ono Ono -onomy opt oPt OPt OPT opt. optic optical PTI ron Ron RON str STR str. tic TIC -tic tical TRO tron Tron -tron

48 words-in-word RTL (Words found written from right to left, inside the word. Minimum size 3 letters.)

ACI ala Ala ALA Ala. a␣la à␣la cit cit. ITP lac Lac LAc LAC Laci mon Mon MON 'mon mon- mon. Mon. mono Mono mono- nor NOR nor- Nor. ono Ono ort ORT orts ORTs rts RTs RTS sal Sal SAL -sal sal- -sal- sala TPO TSA T(S/A)

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