testis

noun

"testis" is a 6-letter English headword indexed on PlainSpell.

The verdict

“testis” is uncommon English (frequency #57,765 among 3,151 “T” headwords), classed as a noun. The kind of spelling people second-guess.

#57,765
frequency rank, English
3,151
“T” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A testicle of a vertebrate.

Corpus desk

Index EN-testis · testis · English

testis · rank #57,765 · 0 variants · 0 confusables

  • FREQ-RARE #57,765
  • LEN-LONG 6 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,151
  • PHOTO-FINISH temporally

Nearest frequency peer: temporally (-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 “testis”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for testis
PropertyValue
Headwordtestis
LanguageEnglish
Part of speechNoun
Letters6
Frequency rank#57,765
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “testis” in English

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).testisfalls in this rarity band:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Rare peers in the same band: “temporally” (#57,764), “theatrically” (#57,767), “teeter” (#57,761). Among 3,151 “T” headwords, “testis” is #57,765. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

testis is uncommon English at frequency #57,765 among 3,151 “T” headwords, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.

The misspelling generator found no plausible variants for testis, which points to an orthography that plays by predictable English rules. It is not paired with a close-neighbour confusable in our dataset, since no other headword is close enough in sound or shape to pair with it.

Etymologically, the entry records: Learned borrowing from Latin testis. The correct English form is testis, spelled T-E-S-T-I-S.

Definition

  1. 1
    A testicle of a vertebrate.
  2. 2
    An analogous gland in invertebrates such as the hydra.

Recorded use

Wiktionary example

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

  1. In the Middle Ages, for instance, a recipe for sex stimulation required the putrefied flesh of a human corpse, together with both human and animal testes and ovaries, pimento, and alcohol.

Etymology

Learned borrowing from Latin testis.

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

How do you spell "testis"?
"testis" is spelled T-E-S-T-I-S.
What does "testis" mean?
As a noun, "testis" means: A testicle of a vertebrate.
What is the origin of the word "testis"?
Learned borrowing from Latin testis. 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 "testis", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 6 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list