adj · noun · 6 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
/ˈkɒsteɪt/
kŏstāt
rhymes with -ɒsteɪt
/ˈkəʊsteɪt/
kōstāt
1
adj
Meaning 1
Having ribs, or the appearance of ribs.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
adj
Meaning 2
Having one or more longitudinal ribs.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
Topics: biology, botany, natural-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
A state in alliance with another state.
Definition source: English Wiktionary via Wiktextract
Qualifier: international law
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
noun
Meaning 4
An equation or variable related to the state equation of an optimal control problem in a dynamical system.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
adjective satellite
Meaning 5
having ribs
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
adjective satellite
Meaning 6
(of the surface) having a rough, riblike texture
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: ribbed
Antonyms: none provided
History
Etymology
Borrowed from Latin costātus, from costa (“rib”) + -ātus, see -ate (adjective-forming suffix).
Etymology tree Proto-Indo-European *ḱe? Proto-Indo-European *ḱóm Proto-Italic *kom Proto-Italic *kom- Latin con- Latin co-der. English co- Proto-Indo-European *steh2- Proto-Indo-European *-tus Proto-Indo-European *stéh2-tu-s ~ *sth2-téw-s Proto-Italic *status Latin statuslbor. Old French estatbor. Middle English stat English state English costate From co- + state.