entropy

Term: entropy

Literally meaning: “a turning, transformation”

Origin: Anc Greek

εν-/en-(=in)

+τροπή/tropi(=turn, convert)

Coined/History
The term was coined in 1865 by the German physicist Rudolf Clausius (1822-1888), reffering  the transformation of energy in a system to useful work

Definition

Entropy is a thermodynamic quantity of energy which describes the spontaneous process through atoms and molecules become more spread. The greater the entropy, the less available the useful energy . In a modern concept  the entropy is the degree of uncertainty in a system. Later the concept of entropy passed in mathematics where expressed the degree of uncertainty in a closed system of information.

angioscotometry

Term: angioscotometry

Literally meaning: “measurement of vessel’s darkness”

Origin: Anc Greek

αγγείο/aggio (=vessel, receptacle) > άγγος/aggos(=tube)

+σκότος/scotos(=darkness) > σκιά/scia(shadow)

+(-μετρία)/(-metry) (= suffix forming nouns relating measures and measurement)> μέτρον/metron (=measurement)

Coined/History

(?)

Definition

Angioscotometry is the measurement of  an angioscotoma.

angioscopy

Term: angioscopy

Literally meaning: “examination of vessel”

Origin: Anc Greek

αγγείο/aggio (=vessel, receptacle) > άγγος/aggos(=tube)

+ σκοπός/scopos(=aim, look at)

Coined/History

The first record for a successful angioscopy was by surgeons during operations carried out at about 1970, that of percutaneous angioscopy dating from 1984.

Definition

Angioscopy is a technique for visualizing the lumen of a blood vessels by using fiberoptic catheter.