pathology \pa*thol"o*gy\ (-j[y^]), n.; pl. pathologies (-j[i^]z). [Gr. pa`qos a suffering, disease + -logy: cf. F. pathologie.]

1. (Med.) The science which treats of diseases, their nature, causes, progress, symptoms, etc. [1913 Webster]

Note: Pathology is general or special, according as it treats of disease or morbid processes in general, or of particular diseases; it is also subdivided into internal and external, or medical and surgical pathology. Its departments are nosology, [ae]tiology, morbid anatomy, symptomatology, and therapeutics, which treat respectively of the classification, causation, organic changes, symptoms, and cure of diseases. [1913 Webster]

2. (Med.) The condition of an organ, tissue, or fluid produced by disease. [Webster 1913 Suppl.]

Celluar pathology, a theory that gives prominence to the vital action of cells in the healthy and diseased functions of the body. --Virchow. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

aetiology \ae`ti*ol"o*gy\ ([=e]`t[i^]*[o^]l"[-o]*j[y^]), n. [L. aetologia, Gr. a'itiologi`a; a'iti`a cause + lo`gos description: cf. F. ['e]tiologie.]

1. 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; etiology. AS [1913 Webster]

2. The assignment of a cause. [1913 Webster]

3. (Med.) The cause or origin of a disease. Now more commonly written etiology. [PJC + AS]

Source: The Collaborative International Dictionary of English v.0.48
 

aetiology

Source: WordNet (r) 2.0
 

AEtiology \[AE]`ti*ol"o*gy\, n. [L. aetologia, Gr. ?; ? cause + ? description: cf. F. ['e]tiologie.]

1. 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.

2. The assignment of a cause.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Pathology \Pa*thol"o*gy\ (-j[y^]), n.; pl. Pathologies (-j[i^]z). [Gr. pa`qos a suffering, disease + -logy: cf. F. pathologie.]

(Med.) The science which treats of diseases, their nature, causes, progress, symptoms, etc.

Note: Pathology is general or special, according as it treats of disease or morbid processes in general, or of particular diseases; it is also subdivided into internal and external, or medical and surgical pathology. Its departments are nosology, [ae]tiology, morbid anatomy, symptomatology, and therapeutics, which treat respectively of the classification, causation, organic changes, symptoms, and cure of diseases.

Celluar pathology, a theory that gives prominence to the vital action of cells in the healthy and diseased function of the body. --Virchow.

Source: Webster's Revised Unabridged Dictionary (1913)