Sola Lumina
WORD RADICALS · LATIN & GREEK

Stop memorizing words.
Start reading their parts.

WORD SCAN · ENGLISH3 ROOTS FOUND
photosynthesis
φῶςlightσύνtogetherθέσιςplacing

photosynthesis · “putting together with light”

Type an English word to see the Greek and Latin inside it—or start with an ancient word and discover its English descendants.

Start decoding
A DICTIONARY THAT WORKS BOTH WAYS

English in.
Ancient roots out.
Or reverse it.

You typephotographyEN
photo-lightGreek phōs
-graphywritingGreek graphō
REVERSE LOOKUPlogos

Finds λόγος, its meanings, forms, and English descendants.

THE LIBRARY44,000+

real Latin and Ancient Greek words

Built for real questions, not one rehearsed demo.

Look up definitions and principal parts. Resolve plurals, verb forms, optional accents, and Greek typed in the Latin alphabet. Open a single root and see the English family that grew from it.

Proper macronsGreek accentsInflection paradigmsNatural search
DUE NOW · GREEKgraph-

write · draw

photographbiographygeography
TOMORROWbio-
LATERtele-

LOOK IT UP ONCE. LEARN IT FOR GOOD.

The roots worth knowing come back before you forget them.

Built-in flashcards use spaced repetition. A Word of the Day widget brings a productive root to your Home Screen, and paradigm drills help Latin and Greek students practice the forms they miss.

PLAIN ANSWERS

Who is this actually for?

01

Curious readers

Understand why everyday English means what it means.

02

SAT & GRE students

Build vocabulary as a system instead of a list.

03

Science & medicine

Decode the classical pieces inside technical language.

04

Latin & Greek students

Search real words, study paradigms, and review missed forms.

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