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seno

SEH-noh/ˈseno/

“seno” means “breast” in Spanish. It has 2 different meanings depending on context:

breast, bosom

Also: heart, womb
NounmB2
General
A close-up illustration of a mother holding a baby to her chest.

📝 In Action

Es importante realizarse chequeos para prevenir el cáncer de seno.

B1

It is important to have check-ups to prevent breast cancer.

Creció en el seno de una familia muy unida.

B2

He grew up in the heart of a very close-knit family.

La propuesta fue debatida en el seno del gobierno.

C1

The proposal was debated within the government.

Word Connections

Synonyms

Antonyms

Common Collocations

  • en el seno de – within / in the heart of
  • cáncer de seno – breast cancer
  • seno materno – mother's womb / mother's lap

Idioms & Expressions

  • en el seno de la familia – within the safety and privacy of one's family

sine

NounmC1formal
A smooth, continuous wave flowing horizontally across the frame.

📝 In Action

El seno de un ángulo de noventa grados es uno.

C1

The sine of a ninety-degree angle is one.

Estamos estudiando las ondas de seno en clase de física.

C2

We are studying sine waves in physics class.

Word Connections

Antonyms

  • coseno (cosine)

Common Collocations

  • función seno – sine function
  • onda de seno – sine wave

Translate to Spanish

Words that translate to "seno" in Spanish:

sine→

✏️ Quick Practice

Quick Quiz: seno

Question 1 of 3

Which sentence uses 'seno' in a mathematical context?

📚 More Resources

👥 Word Family▼
sinuoso(winding/curvy) — Adjective
sinuosidad(curviness) — Noun
ensanchar(to widen) — Verb
🎵 Rhymes▼
📚 Etymology▼

From the Latin word 'sinus', which described a curve, a fold in a garment, or a hollow space.

First recorded: 13th century

Cognates (Related words)

English: sinusFrench: seinPortuguese: seio

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Frequently Asked Questions

Can 'seno' refer to a man?

In a physical, anatomical sense, 'seno' usually refers to female breasts. For a man's chest, you should use 'pecho'.

Is 'seno' the same as 'pecho'?

'Pecho' is a general word for 'chest'. 'Seno' is more specific: it is used medically for breasts, mathematically for 'sine', and figuratively for 'the heart/inside' of a group.

How do I say 'sine wave' in Spanish?

You say 'onda senoidal' or 'onda de seno'.