[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/dictionaries/school/w/pondweed.html)

[home](https://md.mova.elamur.ai/free/en/) / [dictionaries](https://md.mova.elamur.ai/free/en/dictionaries/) / [The school dictionary](https://md.mova.elamur.ai/free/en/dictionaries/school/) / pondweed

[← P](https://md.mova.elamur.ai/free/en/dictionaries/school/P/)

# pondweed

«pondweed» in Mova's school dictionary: **A plant that grows in ponds and slow rivers, often under…** — its meaning for a pupil, its sense in the lessons and examples, with 1 sentence of Mova's corpora that use it.

### part of speech

noun (pondweed — uncountable; a pondweed, pondweeds)

### meaning for a pupil

A plant that grows in ponds and slow rivers, often under or on the water, with green leaves or stems. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/pondweed/#m1)

### sense in the lessons

In science lessons, pondweed (often Canadian pondweed, Elodea) is used in experiments on photosynthesis: put it in water under a lamp and count the oxygen bubbles. Pondweed gives food, shelter and oxygen to pond animals like tadpoles and snails. In stories, pondweed is slimy and tangly. Phrases: «count the bubbles», «pondweed experiment», «covered in pondweed».

### examples

- We counted the oxygen bubbles coming from the pondweed. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/pondweed/#x1)
- When the lamp was closer, the pondweed made more bubbles. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/pondweed/#x2)
- Tadpoles hide in the pondweed. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/pondweed/#x3)
- The frog jumped out covered in green pondweed. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/pondweed/#x4)
- Too much pondweed can choke a pond. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/pondweed/#x5)
- Our class pond has lots of pondweed. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/pondweed/#x6)

### note

Usually uncountable («some pondweed»); «pondweeds» for kinds. One word. In the experiment, more light means more bubbles (more photosynthesis) up to a point — a fair test changes only the distance of the lamp.

### In the corpora

- [Water plants use light to make sugar and give off oxygen, so pondweed makes bubbles in sunlight and stops in the dark.](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/20-gases-all-around-breath-and-balloons/18/)

### Trees and pragmatics

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