From Middle English conserven, from Old French conserver, from Latin conservare, from com- (intensive prefix) + servo ("keep watch, maintain").

Noun

• enPR: kŏn'sû(r)v, IPA: /ˈkɒnsɜː(ɹ)v/

Verb

• enPR: kən-sû(r)v', IPA: /kənˈsɜː(ɹ)v/

conserve (plural conserves)

1. Wilderness where human development is prohibited.
2. A jam or thick syrup made from fruit.
   • Error: invalid time (Gregorian calendar), Isaac Bickerstaff [et al., pseudonyms; Richard Steele et al.], “Error: invalid time, August 11, 1709”, in The Tatler, number 53; republished in [Richard Steele], editor, The Tatler, […], London stereotype edition, volume I, London: I. Walker and Co.;  […], 1822, →OCLC ↗:

     I shall […] study broths, plasters, and conserves, till from a fine lady I become a notable woman.

     The spelling has been modernized.

3. (obsolete) A medicinal confection made of freshly gathered vegetable substances mixed with finely powdered refined sugar.
4. (obsolete) A conservatory.
   • c. 1700, John Evelyn, Elysium Britannicum:

     water […] alwayes placed in the Conserve

• Portuguese: reserva
• Spanish: parque nacional

conserve (conserves, present participle conserving; simple past and past participle conserved)

1. (transitive) To save for later use, sometimes by the use of a preservative.

   to conserve fruits with sugar

   • 1721, John Strype, Ecclesiastical Memorials; Relating Chiefly to Religion, and the Reformation of It, and the Emergencies of the Church of England, under King Henry VIII. King Edward VI. and Queen Mary the First. […], volume (please specify |volume=I to III), London: John Wyat, →OCLC ↗:

     the amity which […] they meant to conserve and maintain with the emperor

2. (transitive) To protect an environment, heritage, etc.
3. (physics, chemistry, intransitive) To remain unchanged during a process

• Italian: conservare
• Portuguese: conservar
• Russian: сохраня́ть
• Spanish: reservar, conservar

• Portuguese: conservar
• Russian: охраня́ть
• Spanish: conservar