The Delta variant of COVID-19.

A state of Nigeria in the South South geopolitical zone. Capital: Asaba. Largest city: Warri. / A census-designated place and unincorporated community in Clay County, Alabama.

(cryptography) To calculate the differences between the characters in an enciphered text and the characters a fixed number of positions previous.

The fourth letter of the modern Greek alphabet Δ, δ. / A landform at the mouth of a river where it empties into a body of water.

Acronym of Diploma in Teaching English to Speakers of Other Languages, an advanced qualification to teach English, higher than the CELTA, accredited by the University of Cambridge.

simple past tense and past participle of delta

plural of delta

present participle of delta

A particular allotrope of iron.

(electricity) A type of three-phase connection.