troncal

core

adjective trohn-KAHL Rare

Also means

trunk

Usage Note

Troncal derives from tronco (trunk) and means 'relating to the main trunk or core'. In education, asignaturas troncales are core/compulsory subjects. In telecommunications and transport, it describes a main artery or backbone line. It is invariable by gender: una línea troncal, el eje troncal.

Examples

"Las matemáticas son una asignatura troncal en el bachillerato."

Natural Translation

Mathematics is a core subject in secondary school.

Free starter pack

Building your Spanish vocabulary?

Get the 100 most common Spanish words as a free PDF — one email, no spam.

Related Words

Explore Spanish by topic

SpanishNow

Spanish Subjunctive Explained Simply for Beginners

The Spanish subjunctive is a mood, not a tense — use it after a WEIRDO trigger plus que. Learn the one rule, the yo-form recipe, and the lines you already say.

June 9, 2026 5 min read

SpanishNow

Preterite vs. Imperfect: Spanish Past Tense Made Easy

Preterite vs. imperfect: use the preterite for finished events, the imperfect for ongoing scenery. A trigger-word cheat sheet, flowchart, and examples.

June 9, 2026 6 min read

SpanishNow

How to Respond to ¿Cómo Estás? (Not Just Bien)

Respond to ¿cómo estás? like a native: add gracias, bounce back ¿y tú?, and pick a reply by mood — bien, no me quejo, más o menos, or ahí voy.

June 3, 2026 6 min read

SpanishNow

Spanish Filler Words: 15 Ways to Sound Natural

Spanish filler words like pues, o sea, and vale make you sound natural, not robotic. Learn 15 muletillas sorted by job, by region, and when not to use them.

June 9, 2026 6 min read