spinosaurus

/ˌspaɪnəˈsɔːɹəs/

//ˌspaɪnəˈsɔːɹəs// noun

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

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

The verdict

“spinosaurus” is uncommon English (frequency #92,100 among 6,566 “S” headwords), classed as a noun. The kind of spelling people second-guess.

#92,100
frequency rank, English
6,566
“S” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A large, extinct, carnivorous dinosaur of genus †Spinosaurus, with a long snout like that of a crocodile and with a sail on its back. It is considered to be the largest theropod dinosaur.

Corpus desk

Index EN-spinosaurus · spinosaurus · English

spinosaurus · rank #92,100 · 0 variants · 0 confusables

  • FREQ-RARE #92,100
  • LEN-MEGA 11 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 6,566
  • PHOTO-FINISH Spetsnaz

Nearest frequency peer: Spetsnaz (-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 “spinosaurus”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for spinosaurus
PropertyValue
Headwordspinosaurus
LanguageEnglish
Part of speechNoun
IPA/ˌspaɪnəˈsɔːɹəs/
Letters11
Frequency rank#92,100
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “spinosaurus” in English

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).spinosaurusfalls 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: “Spetsnaz” (#92,099), “sprit” (#92,101), “spellcheck” (#92,098). Among 6,566 “S” headwords, “spinosaurus” is #92,100. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

spinosaurus is uncommon English at frequency #92,100 among 6,566 “S” headwords, classed as anoun, transcribed /ˌspaɪnəˈsɔːɹəs/. Rarity is why readers land here mid-draft. Gloss: "A large, extinct, carnivorous dinosaur of genus †Spinosaurus, with a long snout like that of a crocodile and with a sail on its back. It is considered to be the largest theropod dinosaur.".

Zero misspellings are on record for spinosaurus in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. Our dataset records no confusable match here, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Etymologically, the entry records: From the taxonomic name Spinosaurus. By surface analysis, spino- (“spine”) + -saurus (suffix forming names for dinosaurs). The correct English form is spinosaurus, spelled S-P-I-N-O-S-A-U-R-U-S.

Definition

  1. 1
    A large, extinct, carnivorous dinosaur of genus †Spinosaurus, with a long snout like that of a crocodile and with a sail on its back. It is considered to be the largest theropod dinosaur.

Recorded use

Wiktionary example

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

  1. The first spinosaurus remains were discovered in Egypt in 1911, but they were destroyed in 1944 during World War II. A lot of what is known about spinosauruses comes from skull material found in Morocco and Algeria in later years.

Etymology

From the taxonomic name Spinosaurus. By surface analysis, spino- (“spine”) + -saurus (suffix forming names for dinosaurs).

This word in other languages

espinosaurio(Español)

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 "spinosaurus"?
"spinosaurus" is spelled S-P-I-N-O-S-A-U-R-U-S. The IPA pronunciation is /ˌspaɪnəˈsɔːɹəs/.
What does "spinosaurus" mean?
As a noun, "spinosaurus" means: A large, extinct, carnivorous dinosaur of genus †Spinosaurus, with a long snout like that of a crocodile and with a sail on its back. It is considered to be the largest theropod dinosaur.
How do you pronounce "spinosaurus"?
The IPA (International Phonetic Alphabet) transcription for "spinosaurus" is /ˌspaɪnəˈsɔːɹəs/. 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 "spinosaurus"?
From the taxonomic name Spinosaurus. By surface analysis, spino- (“spine”) + -saurus (suffix forming names for dinosaurs). 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 "spinosaurus", not the corpus desk frequency band.

Same letter count

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

sickeningly#92,072swallowtail#92,129serological#92,054tobacconist#92,162

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

Source: FrequencyWords open word-frequency list