ajustar

a- +‎ just (“just”) +‎ -ar

• (Balearic, Central) IPA^(key): /ə.ʒusˈta/
• (Valencian) IPA^(key): /a.d͡ʒusˈtaɾ/

ajustar (first-person singular present ajusto, past participle ajustat)

1. to adjust, to set

Borrowed from English adjust, French ajuster, German justieren, Italian aggiustare, Spanish ajustar. Decision no. 1216, Progreso VII.

ajustar (present ajustas, past ajustis, future ajustos, conditional ajustus, imperative ajustez)

1. (transitive, technology) to adjust, regulate, set (an instrument, microscope, meter, etc.)

• ajusto (“setting”)
• ajusti (“settings”)

• Progreso III (in Ido), 1910–1911, pages 70, 219
• Progreso VII (in Ido), 1914, page 66

ajustar (Latin spelling, Hebrew spelling אגוסטאר‎)

1. to add

a- +‎ justo +‎ -ar

• (Portugal) IPA^(key): /ɐˈʒuʃtaɾ/

ajustar (first-person singular present indicative ajusto, past participle ajustado)

1. to adjust
2. to adapt
3. to fit

From justo. Some of the medieval Old Spanish senses (compare Ladino ajustar (“to add”)) seem to correspond better to Vulgar Latin *adiuxtāre or *iuxtāre, from Latin iuxta (compare French ajouter (“to add”))[1].

ajustar (first-person singular present ajusto, first-person singular preterite ajusté, past participle ajustado)

1. to adjust

• desajustar

• “ajustar” in Diccionario de la lengua española, Vigésima tercera edición, Real Academia Española, 2014.