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Egyptian language - Wikipedia
Stellar classification - Wikipedia
File:Greek lc chi.svg - Wiktionary, the free dictionary
File:Greek letter tau serif+sans.svg - Simple English Wiktionary
del - Wiktionary, the free dictionary
tea - Wiktionary, the free dictionary
De (Cyrillic) - Wikipedia
Delta Cephei - Wikipedia
eye - Wiktionary, the free dictionary
Tributary - Wikiwand
Entropy - Wikipedia
Buoyancy - Wikipedia
Is the Greek letter 'Delta' the same thing as the Latin letter 'A'? If not, what is the difference between them? - Quora
Orbit - Wikipedia