Search the Dictionary

gen, united with a more negative element or radical, either alone, or more generally with oxygen, and take their names from this negative element or radical. Those which contain no oxygen are sometimes called hydracids in distinction from the others which are called oxygen acids or oxacids.

A simple or compound principle, whose presence is necessary to produce acidity, as oxygen, chlorine, bromine, iodine, etc.

To expose to the chemical action of air; to oxygenate (the blood) by respiration; to arterialize. Aërated bread, bread raised by charging dough with carbonic acid gas, instead of generating the gas in the dough by fermentation.

A change produced in the blood by exposure to the air in respiration; oxygenation of the blood in respiration; arterialization.

Growing or thriving only in the presence of oxygen; also, pertaining to, or induced by, aërobies; as, aërobic fermentation. -- A`ër*o"bic*al*ly (#), adv.

Microörganisms which live in contact with the air and need oxygen for their growth; as the microbacteria which form on the surface of putrefactive fluids.

f the nature of, aërobies; as, aërobiotic plants, which live only when supplied with free oxygen.

The positive or negative stimulus exerted by oxygen on aërobic and anaërobic bacteria. -- A`ër*o*tac"tic (#), a.

e or lower the price of stocks or public funds. Vanity and agiotage are to a Parisian the oxygen and hydrogen of life. Landor.

Any aëriform body; a gas; as, oxygen was formerly called vital air. [Obs.]

One of the earths, consisting of two parts of aluminium and three of oxygen, Al2O3.

An element that in combination produces amphid salt; -- applied by Berzelius to oxygen, sulphur, selenium, and tellurium. [R.]

A compound of the radical amyl with oxygen and a positive atom or radical.

called facultative anaërobia when able to live either in the presence or absence of free oxygen; obligate, or obligatory, anaërobia when they thrive only in its absence.

Microörganisms which do not require oxygen, but are killed by it. Sternberg.

n internal cavity or stomach for digestion; by giving carbonic acid to the air and taking oxygen in the process of respiration; and by increasing in motive power or active aggressive force with progress to maturity.

A compound formerly supposed to be modification of oxygen, but now known to be hydrogen dioxide; -- so called because apparently antagonistic to ozone, converting it into ordinary oxygen.

cess of converting venous blood into arterial blood during its passage through the lungs, oxygen being absorbed and carbonic acid evolved; -- called also aëration and hematosis.

To transform, as the venous blood, into arterial blood by exposure to oxygen in the lungs; to make arterial.

Any gaseous envelope or medium. An atmosphere of cold oxygen. Miller.