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"Serie" is a form of "serie", a noun which is often translated as "series". "Folio" is a form of "folio", a noun which is often translated as "sheet". Learn more about the difference between "serie" and "folio" below.
la serie(
seh
-
ryeh
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
1. (succession)
a. series
El doctor me hizo una serie de preguntas antes de hacer el examen físico.The doctor asked me a series of questions before the physical examination.
a. series
El U.S. Mint acaba de estrenar una nueva serie de billetes de dólar.The U.S. Mint just released a new series of dollar bills.
5. (sports)
a. qualifying heat
En la mañana del sábado se correrán las series de los 100 metros lisos.The 100-meter qualifying heats will be run on Saturday morning.
el folio(
foh
-
lyoh
)A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
a. foolscap paper
Fui a una papelería en México y no tenían folios; solo tenían hojas de tamaño A4.I went to a stationery store in Mexico and they didn't have foolscap paper; they only had A4 sheets.
a. folio
Los folios de ese libro antiguo son muy frágiles.The folios of that ancient book are very delicate.
4. (printing)
a. page heading
Tengo que cambiar el folio de este ensayo porque es muy largo.I need to change the page heading on this essay because it's too long.
b. running title
El folio de este documento no tiene el formato adecuado.The running title of this document is not formatted correctly.
