Zeolite
<chemical> A term now used to designate any one of a family of minerals, hydrous silicates of alumina, with lime, (more...)

Zeolites
<chemical> Zeolites. A group of crystalline, hydrated alkali-aluminum silicates. They occur naturally in sedimenta (more...)

Zeoscope
<instrument> A device for determining the alcoholic content of a liquid by ascertaining its exact boiling point.

Zephyrus
The west wind, or zephyr; usually personified, and made the most mild and gentle of all the sylvan deities. "Mild as whe (more...)

Zepto-
<prefix> Prefix used in the SI and metric systems to signify 10 E-21.

Zeranol
<chemical> (3s,7x)-3,4,5,6,7,8,9,10,11,12-decahydro-7,14,16-trihydroxy-3-methyl-1h-2-benzoxacyclotetradecin-1-one. (more...)

Zerda
<zoology> The fennec.

Zero
Origin: F. Zero, from Ar. Cafrun, cifrun, empty, a cipher. Cf. Cipher.

Zero Degree Teeth
Prosthetic teeth having no cusp angles in relation to the horizontal.

Zero End-expiratory Pressure
Airway pressure which, at the end of expiration, equals atmospheric pressure.