Translation

dainosō means "Dinosaur" in English.
It's a katakanization, a loan-word.

dainosō is normally written with katakana, as ダイノソー.
dainosō written with hiragana is だいのそー.
dainosō does not have kanji.
Romaji da i no soo
Katakana
Hiragana

Orthography Notes

Synonyms

Further Reading

Wikipedia: 恐竜 (Dinosaur)