مواد مضر
“مواد مضر” (mâvâdde mâzzer) — harmful impurities, pollutants in Persian. Phrase, level B1. The substances plus the harmful: in air, water, food. A water analysis in the laboratory measures exactly these. There are harmful impurities in the air, says the example. In a live sentence: “در هوا مواد مضر هست.” — There are harmful impurities in the air. Written with the characters م, و, ا, د, م, ض, ر. A word from the everyday Persian course, level B1.
In short
| Written in Persian | مواد مضر |
| Read in Latin letters | mâvâdde mâzzer |
| Translation | harmful impurities, pollutants |
| Part of speech | phrase |
| Level | B1 |
Why it looks that way
The substances plus the harmful: in air, water, food. A water analysis in the laboratory measures exactly these. There are harmful impurities in the air, says the example
A word with a story stays in memory longer than one learned as a “spelling — translation” pair: memory holds on to meaning, not to a string.
In a live sentence
A single word almost never appears alone in conversation. A sentence shows where it fits and what stands next to it.
- در هوا مواد مضر هست.dar hâvâ mâvâdde mâzzer hast.There are harmful impurities in the air.
How not to forget this word
Reading a word and remembering it are different jobs. A day later, little survives of a single reading — and that is not bad memory, that is how memory works.
- This has been tested on foreign words too. The difference shows up most when you test yourself a few days later rather than straight away.checked many timesKim & Webb, 2022, Language Learning 72(2) · 48 experiments, 3,411 participants, 98 comparisons.
- Recalling beats re-reading. Covering the translation and trying to remember it does more than reading it ten more times.checked many timesAdesope, Trevisan & Sundararajan, 2017, Review of Educational Research 87(3) · 188 experiments, 272 comparisons. g = 0.61; against plain re-reading 0.51, against passive review 0.93.
- An answer you worked out yourself sticks better than one handed to you.checked many timesBertsch et al., 2007, Memory & Cognition 35(2) · 86 studies, 445 comparisons, d = 0.40.
Frequently asked
How do you say “harmful impurities, pollutants” in Persian?
«مواد مضر», read “mâvâdde mâzzer”. In a live sentence: “در هوا مواد مضر هست.” — There are harmful impurities in the air. Phrase, level B1; written with the characters م, و, ا, د, م, ض, ر.
How is “مواد مضر” written in Latin letters?
mâvâdde mâzzer. This is a practical spelling — you need it to read aloud and be understood, not to meet an academic standard.
Why does this word look the way it does?
The substances plus the harmful: in air, water, food. A water analysis in the laboratory measures exactly these. There are harmful impurities in the air, says the example. A word with a story stays in memory longer than a “spelling — translation” pair: memory holds on to meaning, not to a string.