noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Initialism of chief security officer. abbreviation, alt-of, countable, initialism, uncountable
2. 2
   Initialism of chief sustainability officer. abbreviation, alt-of, countable, initialism, uncountable
3. 3
   Initialism of civil society organisation. abbreviation, alt-of, countable, initialism, uncountable
4. 4
   Initialism of combined sewer overflow. abbreviation, alt-of, countable, initialism, uncountable
5. 5
   Initialism of community service officer. abbreviation, alt-of, countable, initialism, uncountable

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6. 6
   Initialism of conditional sentencing order. abbreviation, alt-of, countable, initialism, uncountable

Synonyms

All synonyms

ciso

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.