How to Say "Dinosaur" in Greek

δεινόσαυρος

deinósavros/ðiˈno.sa.vros/masculine

The English word "dinosaur" is translated into Greek as δεινόσαυρος (deinósavros).

δεινόσαυρος is a masculine noun used to refer to a prehistoric reptile.

Meaning: prehistoric reptile (noun)

What does it mean word for word?

The word is a compound of δεινός meaning terrible or fearsome and σαύρος meaning lizard.

The plural form of δεινόσαυρος is δεινόσαυροι.

The word is pronounced /ðiˈno.sa.vros/. It has four syllables, with the stress on the second syllable.

Although the word sounds Ancient Greek, a person speaking only Ancient Greek would not have known it, as the concept of a 'dinosaur' was not defined until 1842.
In many Greek scientific texts, the word is treated as a loanword that has been 're-Hellenized', making it a linguistic loop where English borrowed from Greek and then gave it back.
If you call a person δεινός in Greece, you might actually be giving them a high compliment rather than calling them a monster.

Πόσο μεγάλος ήταν ο δεινόσαυρος;
How big was the dinosaur?
This sentence is useful for asking about the size of a δεινόσαυρος.
Tatoeba #11566331 by carlosalberto, translation #11566309 by carlosalberto
Το μουσείο είχε μια εντυπωσιακή έκθεση για δεινόσαυρους.
The museum had an impressive exhibition about dinosaurs.
Ο μικρός Νίκος λατρεύει τους δεινόσαυρους.
Little Nikos adores dinosaurs.
Είδα έναν δεινόσαυρο στην ταινία που είδαμε χθες.
I saw a dinosaur in the movie we watched yesterday.
Ο δεινόσαυρος ήταν πολύ μεγάλος.
O deinosavros itan poly megalos.
The dinosaur was very big.

Nikos and Anastasia are looking at a book about animals.

Νίκος Nikos

Κοίτα αυτόν τον δεινόσαυρο!
Koita afton ton dinosavro!
Look at this dinosaur!
Αναστασία Anastasia

Είναι ο αγαπημένος μου.
Einai o agapimenos mou.
It is my favorite.
Νίκος Nikos

Τι έτρωγε αυτός ο δεινόσαυρος;
Ti etroghe aftos o dinosavros?
What did this dinosaur eat?
Αναστασία Anastasia

Νομίζω ότι έτρωγε φυτά.
Nomizo oti etroghe fyta.
I think it ate plants.

Sources

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