prism

/ˈpɹɪz(ə)m/

//ˈpɹɪz(ə)m// noun

By · According to Wiktionary data (CC BY-SA) ·

"prism" is a 5-letter English headword indexed on PlainSpell.

The verdict

“prism” has 8 generated spelling variants in the English index at frequency #16,311. The variants make it a useful spelling check.

#16,311
frequency rank, English
4,417
“P” headwords
8
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A polyhedron with parallel ends of the same polygonal shape and size, the other faces being parallelogram-shaped sides.

Corpus desk

Index EN-prism · prism · English

prism · rank #16,311 · 8 variants · 20 confusables

  • FREQ-MID #16,311
  • LEN-MID 5 letters
  • VOW-1 1 vowel
  • CONFUS-HIGH 20 pairs
  • VAR-MID 8 variants
  • BOOK-MID 4,417
  • PHOTO-FINISH preparatory

Nearest frequency peer: preparatory (-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.

Rank peers near misspelling magnet “prism”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “prism” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

prism vs PRS
0% similar
prism vs pros
60% similar
prism vs prom
60% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for prism
PropertyValue
Headwordprism
LanguageEnglish
Part of speechNoun
IPA/ˈpɹɪz(ə)m/
Letters5
Frequency rank#16,311
Misspellings tracked8
Confusable pairs20
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “prism”

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).prismlands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Same rarity band neighbours include “preparatory” (#16,310), “proclamation” (#16,312), “preferable” (#16,309). Among 4,417 “P” headwords, “prism” is #16,311. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 8 spelling variants around prism (IPA /ˈpɹɪz(ə)m/), anoun. Corpus frequency is #16,311 among 4,417 “P” headwords. Wiktionary lists 7 senses, so context still picks the gloss.

Our generated misspelling index lists 8 likely wrong-spelling variants for prism, with forms such as "pirsm", "pprism", and "prims". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 20 confusable-pair relationships, "PRS", "pros", "prom", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: Learned borrowing from Late Latin prisma (“(geometry) prism”), from Ancient Greek πρίσμᾰ (prísmă, “anything sawn; sawdust; (Koine, geometry) prism”), from πρῐ́ζω (prĭ́zō) (a variant of πρῑ́ω (prī́ō, “to saw”), further etymology unknown) + -μᾰ (-mă, suffix f… The correct English form is prism, spelled P-R-I-S-M.

Definition

  1. 1
    A polyhedron with parallel ends of the same polygonal shape and size, the other faces being parallelogram-shaped sides.
  2. 2
    A polyhedron with parallel ends of the same polygonal shape and size, the other faces being parallelogram-shaped sides.
  3. 3
    A polyhedron with parallel ends of the same polygonal shape and size, the other faces being parallelogram-shaped sides.
  4. 4
    A polyhedron with parallel ends of the same polygonal shape and size, the other faces being parallelogram-shaped sides.
  5. 5
    A polyhedron with parallel ends of the same polygonal shape and size, the other faces being parallelogram-shaped sides.
  6. 6
    A retroreflector (“device which reflects light back to its source with minimal scattering”) which is usually attached to a surveying pole as a target for a total station which emits a light beam at the device and calculates how long it takes to be reflected back in order to measure distance.
  7. 7
    A perspective that colours one's perception.

Recorded use

Wiktionary examples

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

  1. [page 13] One of theſe Parts [of a piece of black paper] I painted vvith a red Colour and the other vvith a blevv. […] This Paper I vievved through a Priſm of ſolid Glaſs, vvhoſe tvvo Sides through vvhich the Light paſſed to the Eye vvere plane and vvell poliſhed, and contained an Angle of about Sixty Degrees: vvhich Angle I call the refracting Angle of t…
  2. Here, avvful [Isaac] Newton, the diſſolving clouds / Form, fronting on the ſun, thy ſhovvery priſm; / And to the ſage-inſtructed eye unfold / The various tvvine of light, by thee diſclos'd / From the vvhite mingling maze.

Etymology

Learned borrowing from Late Latin prisma (“(geometry) prism”), from Ancient Greek πρίσμᾰ (prísmă, “anything sawn; sawdust; (Koine, geometry) prism”), from πρῐ́ζω (prĭ́zō) (a variant of πρῑ́ω (prī́ō, “to saw”), further etymology unknown) + -μᾰ (-mă, suffix forming neuter nouns denoting the effect or result of an action, etc.).

This word in other languages

prisma(Español)prisme(Français)Prisma(Deutsch)prisma(Português)

Common misspellings

Also misspelled as:

  • pirsm
  • pprism
  • prims
  • prismm
  • prissm
  • prrism
  • prsim
  • rpism

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of prism - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

pirsm2pprism1prims2prismm1prissm1prrism1prsim2rpism2
Edit distance from "prism"

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

How do you spell "prism"?
"prism" is spelled P-R-I-S-M. The IPA pronunciation is /ˈpɹɪz(ə)m/.
What does "prism" mean?
As a noun, "prism" means: A polyhedron with parallel ends of the same polygonal shape and size, the other faces being parallelogram-shaped sides.
What words are commonly confused with "prism"?
"prism" is commonly confused with "PRS", "pros", "prom". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "prism"?
The IPA (International Phonetic Alphabet) transcription for "prism" is /ˈpɹɪz(ə)m/. 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 "prism"?
Learned borrowing from Late Latin prisma (“(geometry) prism”), from Ancient Greek πρίσμᾰ (prísmă, “anything sawn; sawdust; (Koine, geometry) prism”), from πρῐ́ζω (prĭ́zō) (a variant of πρῑ́ω (prī́ō, “to saw”), further etymology unknown) + -μᾰ (-mă... 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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "prism", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 5 letters (nearest by frequency rank).

pines#16,302Pepsi#16,300renal#16,324patio#16,297

Similar misspelling depth

Headwords with a similar count of attested misspellings (8 here; floor ≥5).

outset8 variantsorient8 variantsRivera8 variantsLatvia8 variants

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

Source: FrequencyWords open word-frequency list