corollary

English

Etymology

From Middle English, from Late Latin corōllārium (“money paid for a garland; gift, gratuity, corollary; consequence, deduction”), from corōlla (“small garland”), diminutive of corōna (“crown”).

Pronunciation

• IPA^(key): /kɒˈɹɒləɹi/, /ˈkɒɹələɹi/
• (US) enPR: kôr'əlĕrē, IPA^(key): /ˈkɔɹəˌlɛɹi/
• (General Australian) IPA^(key): /kɔˈɹoʊˌlɛɹi/

• Audio (Southern England)

  (file)

Noun

corollary (plural corollaries)

1. A gift beyond what is actually due; an addition or superfluity.
2. An a fortiori occurrence, as a result of another effort without significant additional effort.

   Finally getting that cracked window fixed was a nice corollary of redoing the whole storefront.

3. (mathematics, logic) A proposition which follows easily from the statement or proof of another proposition.

   We have proven that this set is finite and well ordered; as a corollary, we now know that there is an order-preserving map from it to the natural numbers.

Derived terms

• corollary relief
• subcorollary

Translations

proposition which follows easily

• Bulgarian: извод (bg) m (izvod), следствие (bg) n (sledstvie)
• Catalan: corol·lari (ca) m
• Chinese: 推論
• Czech: důsledek (cs) m
• Danish: korollar n
• Dutch: gevolg (nl) n, gevolgtrekking (nl) f, uitvloeisel (nl) n
• Finnish: seuraus (fi), korollaari (fi), luonnollinen seuraus
• French: corollaire (fr) m, corolaire (fr) m
• German: Korollar (de) n, Folgesatz m
• Greek: πόρισμα (el) n (pórisma)

  Ancient: πόρῐσμᾰ n (pórisma), προσπόρῐσμᾰ n (prospórisma)

• Hebrew: מסקנה (he) f (maskaná)
• Hungarian: szükségszerű következmény, származékos tétel, velejáró (hu), következmény (hu), folyomány (hu), korollárium (hu)
• Icelandic: fylgisetning f
• Irish: atoradh m
• Italian: corollario (it) m
• Japanese: 系 (ja) (kei, けい)
• Macedonian: королар m (korolar)
• Persian: فرع (fa)
• Polish: następstwo (pl) n
• Portuguese: corolário (pt) m
• Romanian: corolar (ro) n
• Russian: сле́дствие (ru) n (slédstvije)
• Spanish: corolario (es) m
• Swedish: följdsats (sv) c, korollarium (sv) n
• Tagalog: hugpungin
• Welsh: canlyniad (cy) m, canlyniadau (cy) m pl

The translations below need to be checked and inserted above into the appropriate translation tables. See instructions at Wiktionary:Entry layout § Translations.

Translations to be checked

• Irish: ^{(please verify)} comhthoradh m, ^{(please verify)} iarmhairt f

Adjective

corollary (not comparable)

1. Occurring as a natural consequence or result; attendant; consequential.
   • 2019, Li Huang, James Lambert, “Another Arrow for the Quiver: A New Methodology for Multilingual Researchers”, in Journal of Multilingual and Multicultural Development, →DOI, page 11:

     However, given current sensibilities about individual privacy and data protection, the recording of oral data is becoming increasingly onerous for researchers who are obliged to navigate an often time-consuming and complex series of administrative requirements and corollary review processes in order to be granted ethics clearance.

2. (rare) Forming a proposition that follows from one already proved.

Further reading

• “corollary”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.
• “corollary”, in The Century Dictionary […], New York, N.Y.: The Century Co., 1911, →OCLC.