reflectance

noun

"reflectance" is a 11-letter English headword indexed on PlainSpell.

The verdict

“reflectance” is uncommon English (frequency #55,050 among 3,094 “R” headwords), classed as a noun. The kind of spelling people second-guess.

#55,050
frequency rank, English
3,094
“R” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The ratio of the flux reflected to that incident on a surface.

Corpus desk

Index EN-reflectance · reflectance · English

reflectance · rank #55,050 · 0 variants · 0 confusables

  • FREQ-RARE #55,050
  • LEN-MEGA 11 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,094
  • PHOTO-FINISH relegate

Nearest frequency peer: relegate (+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 “reflectance”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “reflectance” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for reflectance
PropertyValue
Headwordreflectance
LanguageEnglish
Part of speechNoun
Letters11
Frequency rank#55,050
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “reflectance” in English

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).reflectancefalls in this rarity band:

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

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “relegate” (#55,051), “ratty” (#55,047), “randomization” (#55,046). Among 3,094 “R” headwords, “reflectance” is #55,050. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

reflectance is uncommon English at frequency #55,050 among 3,094 “R” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The ratio of the flux reflected to that incident on a surface.".

No generated misspelling entries exist for reflectance in our index, suggesting the orthography follows predictable English patterns. It is not paired with a close-neighbour confusable in our dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From reflect + -ance. The correct English form is reflectance, spelled R-E-F-L-E-C-T-A-N-C-E.

Definition

  1. 1
    The ratio of the flux reflected to that incident on a surface.

Etymology

From reflect + -ance.

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 "reflectance"?
"reflectance" is spelled R-E-F-L-E-C-T-A-N-C-E.
What does "reflectance" mean?
As a noun, "reflectance" means: The ratio of the flux reflected to that incident on a surface.
What is the origin of the word "reflectance"?
From reflect + -ance. 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 "reflectance", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 11 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list