rayo
/rra-yo/
lightning bolt

A depiction of a powerful lightning bolt, which is one meaning of rayo.
rayo(noun)
lightning bolt
?Electrical discharge during a storm
,flash of lightning
?The visible light from the discharge
📝 In Action
Un rayo cayó sobre el árbol más alto del campo.
A2A lightning bolt struck the tallest tree in the field.
Después del rayo, siempre escuchamos el trueno.
A2After the flash of lightning, we always hear the thunder.
💡 Grammar Points
Gender Check
Remember 'rayo' is always masculine (el rayo), even though it relates to weather, which sometimes uses feminine nouns (la tormenta).
❌ Common Pitfalls
Lightning vs. Thunder
Mistake: "Using 'rayo' when you mean 'trueno' (thunder)."
Correction: Rayo is the light/flash; trueno is the sound. 'El trueno fue muy fuerte.' (The thunder was very loud.)

This image shows a ray of light, another translation for rayo.
📝 In Action
Un rayo de sol se filtraba por la ventana.
B1A ray of sunshine filtered through the window.
Le hicieron una radiografía de rayos X para ver el hueso roto.
B2They took an X-ray (ray of X) to see the broken bone.
💡 Grammar Points
Technical Usage
When talking about X-rays (radiography), the full term is 'rayos X' (plural), even though we often shorten it to just 'X-ray' in English.

When used as an interjection, rayo can express surprise or mild frustration, similar to saying damn.
rayo(interjection)
damn
?Expressing frustration or surprise (mild curse)
,heck
?Used to soften a question or phrase
📝 In Action
¿Qué rayo estás haciendo aquí?
C1What the heck are you doing here?
¡Me importa un rayo lo que piense!
C1I don't give a damn what he thinks!
💡 Grammar Points
Intensifier/Euphemism
In this context, 'rayo' doesn't mean lightning; it's used as an intensifier, similar to how English uses 'heck' or 'damn' to emphasize annoyance or surprise.
⭐ Usage Tips
Context is Key
This usage is very informal. Be mindful of your audience; stick to 'neutral' language in professional settings.
✏️ Quick Practice
💡 Quick Quiz: rayo
Question 1 of 1
Which sentence uses 'rayo' in its highly informal, expressive context?
📚 More Resources
Frequently Asked Questions
How do I distinguish between 'rayo' and 'relámpago'?
'Rayo' is the physical bolt or flash itself, and is often used to mean 'lightning bolt.' 'Relámpago' specifically refers only to the flash or light, without the accompanying thunder, and often emphasizes the speed and light rather than the destructive force.
Can 'rayo' be used to mean something fast?
Yes! The phrase 'ir hecho un rayo' literally means 'to go made into a lightning bolt,' and is a common way to say someone is moving extremely quickly.