testudinoustestudinous

Testudinous comes from Latin testūdō ‘tortoise, turtle’, from testa ‘a piece of burned clay, brick, tile’, and perhaps ultimately from Proto-Indo-European *ters- ‘dry’.

1. Proto-Indo-Europeanc. 4500–2500 BCE*ters-¹‘dry’uncertain
2. Proto-Indo-Europeanc. 4500–2500 BCE*torséyeti¹‘to make dry, to cause to dry’uncertain
3. Proto-Italicc. 1500–700 BCE*torzeō¹‘to burn, scorch’uncertain
4. Latinc. 75 BCE–200 CEtorreō²‘to burn, parch’uncertain
5. Latinc. 75 BCE–200 CEtesta³‘a piece of burned clay, brick, tile’
6. Latinc. 75 BCE–200 CEtestūdō⁴as testūdin-‘tortoise, turtle’
7. Englishtodaytestudinous⁴

1. ¹ Wiktionary, Latin torreo
2. ² Wiktionary, Latin testa
3. ³ Wiktionary, Latin testudo
4. ⁴ Wiktionary, English testudinous