See Also: nictitation(medicine)

polyvinylidene (iou) and nictitation (medicine)


polyvinylidene (iou)



polyvinylidene noun. M20.
[from POLY- + VINYLIDENE.]
Chemistry.
Used in comb. in names of substances which are polymers of vinylidene compounds. M20.
A synthetic resin prepared from a vinylidene compound. Freq. attrib. M20.
Comb.: polyvinylidene chloride any of a class of resinous polymers of vinylidene chloride which have the structure (CH2CCl2)n, and are used esp. as impact- and chemical-resistant films and fibres.

nictitation (medicine)


nictitation


Winking.

Synonym: nictation.

Origin: L. Nicto, pp. -atus, to wink, fr. Nico, to beckon