neodymium
/nɪə(ʊ)ˈdɪmɪəm/
"neodymium" is a 9-letter English headword indexed on PlainSpell.
The verdict
“neodymium” is uncommon English (frequency #63,833 among 1,534 “N” headwords), classed as a noun. The kind of spelling people second-guess.
- #63,833
- frequency rank, English
- 1,534
- “N” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A chemical element (symbol Nd) with an atomic number of 60: a hard, slightly malleable silvery rare earth metal that quickly tarnishes in air and moisture.
Corpus desk
Index EN-neodymium · neodymium · English
neodymium · rank #63,833 · 0 variants · 0 confusables
- FREQ-RARE #63,833
- LEN-LONG 9 letters
- VOW-5 5 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 1,534
- PHOTO-FINISH netherworld
Nearest frequency peer: netherworld (+1 rank slots)
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Long-tail ranks near “neodymium”
Sparse band: bars invert rank so rarer forms read shorter
- Naman
Naman
36,172 corpus weight
- Nasrallah
Nasrallah
36,170 corpus weight
- neodymium
neodymium
36,168 corpus weight
- netherworld
netherworld
36,167 corpus weight
- neuroendocr…
neuroendocrine
36,166 corpus weight
- neuroses
neuroses
36,165 corpus weight
What this shows Long-tail view: where “neodymium” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | neodymium |
| Language | English |
| Part of speech | Noun |
| IPA | /nɪə(ʊ)ˈdɪmɪəm/ |
| Letters | 9 |
| Frequency rank | #63,833 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “neodymium” in English
Rare enough to double-check
neodymium is uncommon English at frequency #63,833 among 1,534 “N” headwords, classed as anoun, transcribed /nɪə(ʊ)ˈdɪmɪəm/. Rarity is why readers land here mid-draft. 2 senses are on record.
neodymium has no tracked misspelling variants, suggesting the orthography follows predictable English patterns. Our confusable-pair dataset has no match for it, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: From neo- + (di)dymium. The correct English form is neodymium, spelled N-E-O-D-Y-M-I-U-M.
Definition
- 1A chemical element (symbol Nd) with an atomic number of 60: a hard, slightly malleable silvery rare earth metal that quickly tarnishes in air and moisture.
- 2A single atom of this element.
Recorded use
Wiktionary examplesThese source excerpts show how neodymium appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Other rare elements, like neodymium, exist in more than one isotopic form, the ratios of which can provide a measure of the depth from which the flow material may ultimately have been derived.
The most important application of dysprosium and terbium, which belong to a subgroup known as the heavy rare earths, is in devices called neodymium boron magnets, or neo magnets for short.
Etymology
From neo- + (di)dymium.
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "neodymium", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 9 letters (nearest by frequency rank).