See Also: Testa(medicine)
testa(dictionary)
Testa Inmuebles en Renta, S.A.(finance)

pteridine (iou) and testa (iou)


pteridine (iou)



pteridine noun. M20.
[from PTERIN + -IDINE.]
Chemistry. A synthetic yellow crystalline solid, C6H4N4, which has a bicyclic structure formed from fused pyrazine and pyrimidine rings; any of the Derivatives of this, many of which occur naturally as insect pigments and B group vitamins.

testa (iou)



testa noun. . L18.
[Latin: see TEST noun1.]
Botany. The protective outer covering of a seed; the seed-coat. L18.
Zoology. = TEST noun3 2. rare. Only in M19.