Ornithorhynchus anatinus
or-ni-tho-RINK-us uh-NAT-ih-nus
Species (binomial)
The bird-snouted, duck-like creature — the platypus
Literally: Bird-snout duck-like
Ornithorhynchus · genus name
| Part | Meaning | Language | Note |
|---|---|---|---|
| ornith- | A bird | Greek (orni, =s, -th, -tho) | Combining form ornitho-; stem ornith- before the connecting vowel -o- |
| -o- | Connecting vowel, standard Greek practice | ||
| -rhynchus | A snout, beak | Greek (rhynch, -o, =us) | Terminal form -rhynchus (= rhynch + Latinized -us ending); rh- at the junction of a compound is fully pronounced |
anatinus · specific epithet — adjective agreeing with masculine genus
| Part | Meaning | Language | Note |
|---|---|---|---|
| anat- | A duck (anas, stem anat-) | Latin (anat) | Stem of Latin anas, anatis (duck) |
| -inus | Likeness; belonging to | Latin (-inus, =ina, =inum) | Adjectival suffix forming adjectives of resemblance; masculine form -inus agrees with masculine genus Ornithorhynchus |
Ornithorhynchus is a Latinized Greek compound noun (masculine, nominative singular), built from ornitho- 'bird' + rhynchus 'snout/beak', meaning 'bird-beaked one'. The specific epithet anatinus is a Latin adjective (from anat-, stem of anas 'duck', + -inus 'resembling') in its masculine nominative form, agreeing in gender with the genus. Together the binomial describes the platypus as 'the bird-snouted one that resembles a duck' — a reference to its distinctive duck-like bill.
Pronunciation
- or-ni-tho-RINK-us Penult rule 5: the penult vowel (y = short i in 'rhyn') is short but followed by two consonants (n + ch/k), so the penult is stressed.
- uh-NAT-ih-nus Antepenult rule (default): the penult vowel (i) is short and followed by only one consonant (n), so stress falls on the antepenult 'nat'. The antepenult vowel 'a' is short (not followed by another vowel, not a diphthong, not u, and not followed by a single consonant then two vowels), giving a clipped 'uh/a' sound.
Commonly: The genus is sometimes heard as or-NITH-oh-RINK-us in casual speech, shifting secondary stress to the second syllable, but the classical rule gives or-ni-tho-RINK-us.
Other readings
No plausible alternative segmentation: ornith-o-rhynch-us is unambiguous. The spurious matches 'thor-' (rushing) and 'tho-' (quick/jackal) found inside the word are artefacts of the search and play no role in the name's formation.
anat (Latin, 'a duck') is confirmed in the dictionary as a bare stem entry — it is the stem of anas, anatis. The -rh- of -rhynchus falls in the interior of the compound word; both letters are represented in pronunciation as a plain 'r' sound (the h is a Greek breathing mark, not a separate English phoneme). The platypus (Ornithorhynchus anatinus Shaw, 1799) is the sole living species of family Ornithorhynchidae. The name was coined to capture its two most striking features: a beak like a bird's and a bill like a duck's.