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Pertaining to ætiology; assigning a cause. -- Æ`ti*o*log"ic*al*ly, adv.

The science, doctrine, or demonstration of causes; esp., the investigation of the causes of any disease; the science of the origin and development of things.

See Eaglestone.

A group of Coelenterata, including the Medusæ or jellyfishes, and hydroids; -- so called from the stinging power they possess. Sometimes called sea nettles.

A morbid condition characterized by the presence of acetone in the blood, as in diabetes.

Of or pertaining to Achaia in Greece; also, Grecian. -- n.

A group of suctorial Infusoria, which in the adult stage are stationary. See Suctoria.

Dung of dogs or hyenas, which becomes white by exposure to air. It is used in dressing leather, and was formerly used in medicine.

A genus of plants of the Mallow family. It includes the officinal marsh mallow, and the garden hollyhocks.

A poem in which persons are represented at speaking alternately; as the third and seventh eclogues of Virgil.

A fabled serpent with a head at each end, moving either way. Milton.

Like or pertaining to the lizards of the genus Amphisbæna.

A morbid condition in which the blood is deficient in quality or in quantity.

Of or pertaining to anæmia.

Anaërobic bacteria. They are 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.

Relating to, or like, anaërobies; araërobiotic.

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

Related to, or of the nature of, anaërobies.

Entire or partial loss or absence of feeling or sensation; a state of general or local insensibility produced by disease or by the inhalation or application of an anæsthetic.

See Anæsthesia.