coöccurrence

coöccurrence (countable and uncountable, plural coöccurrences)

1. Dated spelling of co-occurrence.
   • 1987: Günter Holtus and Johannes Kramer [Hg.], Romania et Slavia Adriatica: Festschrift für Žarko Muljačić, page 403 (Buske Verlag; ISBN 978‒3‒87118‒849‒7)

     Gerhard Rohlfs, HGIS (3 vols., Bern: A. Francke, 1949–54), II, 282f. (= § 523), stressed the frequent coöccurrence of prefixation and choice of the -ire class endings in de-adjectival verbs (aggrandire, imbruttire, ribrunire — with which apparire, obviously, has little if anything in common) and tried to place the wavering in pres. ind. appaio ~ apparisco, etc. in a broader context (aborro ~ aborrisco, applaudo ~ applaudisco, etc.).

• The diaeresis ⟨◌̈⟩ is sometimes used in native words to separate two adjacent vowels with different pronunciations (e.g. coöperate and reënter). It has been mostly replaced by the use of a hyphen (co-operate and re-enter) or by no indication at all (cooperate and reenter). The accent mark is still used in a few publications, notably The New Yorker.