geometry

noun

Etymology: Etymology tree Pre-Greek der. Proto-Hellenic *gayader. Ancient Greek γαῖᾰ (gaîă)clip. Ancient Greek γῆ (gê) Ancient Greek -ο- (-o-) Ancient Greek γεω- (geō-) Proto-Indo-European *meh₁- Proto-Indo-European *-tḗr Proto-Indo-European *-trom Proto-Hellenic *-tron Ancient Greek -τρον (-tron) Ancient Greek μέτρον (métron) Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-i-eh₂ Proto-Hellenic *-íā Ancient Greek -ῐ́ᾱ (-ĭ́ā) Ancient Greek -μετρίᾱ (-metríā) Ancient Greek γεωμετρῐ́ᾱ (geōmetrĭ́ā)der. Latin geōmetriader. Old French geometriebor. Middle English gemetry English geometry From Middle English gemetry, geometrie, from Old French geometrie (modern French géométrie), from Latin geōmetria, from Ancient Greek γεωμετρία (geōmetría, “geometry, land-survey”), from γεωμέτρης (geōmétrēs, “geometer, land measurer”), from γῆ (gê, “earth, land, country”) + -μετρία (-metría, “measurement”), from μέτρον (métron, “a measure”). By surface analysis, geometer + -y or geo- + -metry. Doublet of gematria.

1. The branch of mathematics dealing with spatial relationships.

   “ANY problem in geometry can easily be reduced to such terms that a knowledge of the lengths of certain straight lines is sufficient for its construction.”

2. A mathematical system that deals with spatial relationships and that is built on a particular set of axioms; a subbranch of geometry which deals with such a system or systems.

   “1975 [Addison-Wesley], Eugene F. Krause, Taxicab Geometry, 1986, Dover, page 64, Entire new geometries are also suggested by real-world cities.”

   “Finite geometries were developed in the late nineteenth century, in part to demonstrate and test the axiomatic properties of completeness, consistency, and independence.”

3. The observed or specified spatial attributes of an object, etc.

   “The inset of figure 1 shows the geometry of the samples. They are 4.6 mm long and 0.4 mm wide.”

   “Also, certain SCSI controllers need to be told where to find drive geometry in order for Linux to recognize the layout of your drive.”

4. A mathematical object comprising representations of a space and of its spatial relationships.