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# ray

«ray» in Mova's school dictionary: **a thin line or beam of light or heat coming from…** — its meaning for a pupil, its sense in the lessons and examples, with 5 sentences of Mova's corpora that use it.

### part of speech

noun (a ray, rays)

### meaning for a pupil

1) A ray is a thin line or beam of light or heat coming from something bright, like the Sun. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/ray/#m1)

2) A ray is a flat sea fish with wide fins like wings and a long thin tail, such as a stingray or manta ray. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/ray/#m2)

3) In maths, a ray is part of a line that starts at one point and goes on forever in one direction. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/ray/#m3)

4) A ray of hope is a small sign that things may get better. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/ray/#m4)

### sense in the lessons

In science, rays of sunlight travel in straight lines; X-rays let doctors see bones; ultraviolet (UV) rays from the Sun can burn skin, so we wear sunscreen. In geometry, an angle is made by two rays from the same point (the vertex). In stories, «a ray of sunshine» can mean a cheerful person. Phrases: «rays of the sun», «X-ray», «UV rays», «a ray of hope», «sting ray».

### examples

- The first rays of sunlight came through the curtains. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/ray/#x1)
- UV rays can burn your skin even on a cloudy day. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/ray/#x2)
- The doctor took an X-ray of my broken wrist. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/ray/#x3)
- We saw a huge ray gliding under the boat. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/ray/#x4)
- Draw a ray starting at point A and passing through point B. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/ray/#x5)
- Two rays with the same endpoint make an angle. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/ray/#x6)
- Her smile was a ray of hope in a bad week. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/ray/#x7)
- Never touch the tail of a stingray. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/ray/#x8)
- The Sun's rays grew warmer and warmer. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/ray/#x9)

### note

Plural rays. A ray has one endpoint; a line segment has two; a line has none and goes on both ways. A ray is named by its endpoint first: ray AB starts at A. Do not mix with «Ray», a boy's name, or with «rain». Stingrays have a sharp barb in the tail that can hurt badly.

### In the corpora

- [AI can help doctors spot patterns in scans such as X-rays; doctors still check and decide.](https://md.mova.elamur.ai/free/en/corpora/school/ai/17-voice-assistants-recommendations/13/)
- [Some sharks and rays lay eggs in leathery cases called mermaid's purses, while other sharks give birth to live pups.](https://md.mova.elamur.ai/free/en/corpora/school/biology/28-sharks/17/)
- [Remoras stick to sharks and rays with a sucker on their heads, and that sucker is really a changed fin.](https://md.mova.elamur.ai/free/en/corpora/school/biology/174-reef-giants-and-wanderers-whale-sharks-mantas-dugongs-and-sea-turtles/15/)
- [It is a mermaid's purse, an egg case that once held a baby shark or ray.](https://md.mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/5/)
- [Sunlight's ultraviolet rays break dye molecules apart, so curtains and posters fade near a window and museums keep the lights low.](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/27-dyes-inks-colouring/19/)

### Trees and pragmatics

[Every meaning and example of «ray» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/R/ray/), each sentence with its dependency tree and frames.