Delta - Oxford Learner's Dictionaries

Oxford logo Toggle navigation Redeem Upgrade Help Sign in

• Dictionaries
  • Dictionaries home
  • English
  • American English
  • Academic
  • Collocations
  • German-English
• Grammar
  • Grammar home
  • Practical English Usage
  • Learn & Practise Grammar (Beta)
• Word Lists
  • Word Lists home
  • My Word Lists
  • Topics
  • Recent additions
• Resources
  • Resources home
  • Text Checker

Sign in Dictionaries

• Dictionaries home
• English
• American English
• Academic
• Collocations
• German-English

Grammar

• Grammar home
• Practical English Usage
• Learn & Practise Grammar (Beta)

Word Lists

• Word Lists home
• My Word Lists
• Topics
• Recent additions

Resources

• Resources home
• Text Checker

Redeem Upgrade Help TOP English English American English Academic English Collocations Practical English Usage German-English English-German English American English Enter search text

Definition of delta noun from the Oxford Advanced Learner's Dictionary

delta noun  /ˈdeltə/  /ˈdeltə/ jump to other results

1. [countable] the fourth letter of the Greek alphabet (Δ, δ)

   Join us

   Join our community to access the latest language learning and assessment tips from Oxford University Press!

2. [countable] an area of land, like a triangle in shape, where a river has split into several smaller rivers before entering the sea
   • the Nile Delta
   Topics Geographyc2
3. Delta [uncountable] a variant (= form) of the SARS-CoV-2 virus that was first reported in late 2020 and named ‘Delta’ in 2021. It became the main form of the virus worldwide until the Omicron variant appeared in late 2021.
   • The Delta variant proved to be more transmissible than earlier variants of the virus.
   Topics Health problemsc2
Word Originsense 1 Greek, from Phoenician daleth.sense 2 mid 16th cent.: originally specifically as the Delta (of the River Nile), from the shape of the Greek letter.

See delta in the Oxford Advanced American DictionarySee delta in the Oxford Learner's Dictionary of Academic EnglishCheck pronunciation: delta

Other results

All matches

• Delta noun
• Delta Force
• delta rays noun
• delta wing noun
• delta rhythm noun
• delta wings

Nearby words

• Delphic adjective
• delphinium noun
• delta noun
• Delta noun
• Delta Force

snowboarding noun From the Topic Sports B1 Oxford Learner's Dictionaries Word of the Day