midieron

Midieron is the pretérito form of the Spanish verb medir, meaning to measure. It is used to indicate that a measuring action was completed in the past and is specifically the form for ellos, ellas, or ustedes as the subject.

Conjugation and irregularity: In the pretérito, medir presents a stem change in the third person forms. The root shifts from met- to mid- for the third person singular and plural. The full pretérito conjugation is: yo medí, tú mediste, él midió, nosotros medimos, vosotros medisteis, ellos midieron. This pattern is typical of certain -ir verbs that undergo a vowel change in the third person forms.

Usage: Midieron appears in narratives and reports to describe past measurements carried out by multiple subjects. It can refer to physical dimensions, quantities, or other measured attributes. It is distinct from the imperfect pretérito forms (medíamos, etc.), which convey ongoing or habitual past actions rather than a completed measurement event.

Examples: Los científicos midieron la temperatura de la muestra durante la noche. Ayer midieron la longitud de la cuerda para asegurarse de que cumplía la especificación. El equipo midieron varias variables antes de cerrar el informe.

Etymology and related forms: Midieron derives from medir, which comes from Latin metiri, meaning to measure. Related forms include medí (yo), mediste (tú), midió (él/ella/usted), medimos (nosotros), medisteis (vosotros). The irregular pretérito forms area notable feature of medir and similar verbs in Spanish.