metalloid

/ˈmɛtəlɔɪd/

//ˈmɛtəlɔɪd// noun

"metalloid" is a 9-letter English headword indexed on PlainSpell.

The verdict

“metalloid” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
9
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - An element, such as silicon or germanium, intermediate in properties between that of a metal and a nonmetal; especially an elemental semiconductor.

Corpus desk

Index EN-metalloid · metalloid · English

metalloid · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 9 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "M" thin
  • PHOTO-UNK Peer pending

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.

Key facts for metalloid
PropertyValue
Headwordmetalloid
LanguageEnglish
Part of speechNoun
IPA/ˈmɛtəlɔɪd/
Letters9
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “metalloid” in English

metalloidfalls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

metalloid is uncommon English outside the top frequency list, classed as anoun, transcribed /ˈmɛtəlɔɪd/. Rarity is why readers land here mid-draft. 3 senses are on record.

We couldn't generate a plausible misspelling set for metalloid, a straightforward case of a spelling with little room for common typos. Our confusable-pair dataset has no match for it, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From metal + -oid. The correct English form is metalloid, spelled M-E-T-A-L-L-O-I-D.

Definition

  1. 1
    An element, such as silicon or germanium, intermediate in properties between that of a metal and a nonmetal; especially an elemental semiconductor.
  2. 2
    The metallic base of a fixed alkali, or alkaline earth; applied to sodium, potassium, and some other metallic substances whose metallic character was supposed to be not well defined.
  3. 3
    A nonmetal.

Recorded use

Wiktionary example

These source excerpts show how metalloid appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. By some they [metals of the alkalies] were called metalloids; by some their simple nature was objected to

Etymology

From metal + -oid.

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). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "metalloid"?
"metalloid" is spelled M-E-T-A-L-L-O-I-D. The IPA pronunciation is /ˈmɛtəlɔɪd/.
What does "metalloid" mean?
As a noun, "metalloid" means: An element, such as silicon or germanium, intermediate in properties between that of a metal and a nonmetal; especially an elemental semiconductor.
How do you pronounce "metalloid"?
The IPA (International Phonetic Alphabet) transcription for "metalloid" is /ˈmɛtəlɔɪd/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "metalloid"?
From metal + -oid. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list