又查了一遍Google

仍然是关于taxonomy的定义。（它是怎么做到的，谁知道？）

大致分为两大类：

一、生物分类

This is the scientific discipline of naming organisms. It was started by Carolus Linné (Carl Linneaus), perhaps the most famous taxonomist. Taxonomy is one of the three branches of Systematics.
www.bioinf.org/molsys/glossaryT.html

The theory and practice of classifying organisms.
www.modernhumanorigins.com/t.html

The classification of organisms in an ordered system that indicates natural relationships.
investigate.conservation.org/expeditions/guyana/glossary.htm

The science or technique of classification of organisms
susdl.fcla.edu/lfnh/currmat/Glossary.htm

the science of classification of organisms on the basis of their supposed evolutionary relationships. For more information see the classification of animals.
museum.nhm.uga.edu/gawildlife/glossary/gawwglossary.html

The science of classifying plants and animals.
animal-world.com/encyclo/reptiles/information/reptile_glossary.htm

the classification of organisms to show relationships to other organisms.
www.mykoweb.com/CAF/glossary.html

The naming and assignment of organisms to taxa.
www.edu.gov.nf.ca/curriculum/teched/resources/glos-biodiversity.html

The science of naming and classifying organisms.
www.cmdr.ubc.ca/pathogenomics/terminology.html

the science of classification of animals and plants
www.deh.gov.au/coasts/publications/marine-fish-action/glossary.html

The classification, nomenclature, and laboratory identification of organisms (Do not confuse with taxidermy – stuffing dead animals)
www.alken-murray.com/glossarybug2.html

The discipline of classifying organisms
www.uoguelph.ca/~mammals/Mammalogy_2005_glossary.htm

The theories and techniques of naming, describing, and classifying organisms.
www.students.ed.qut.edu.au/n2364379/MDB377/GlossaryPage.html

the scientific description, naming, and classification of organisms.
www2.bishopmuseum.org/PBS/samoasnail/fgglossary.html

The field of science that classifies life.
www.sel.barc.usda.gov/scalenet/glossary.htm

the systematic arrangement of the animal (or plant) world in a natural order of evolutionary relationship. It is necessarly closely associated with nomenclature.
www.uvm.edu/~jdecher/GoT.html

The science or principles of classifying organisms (plants) in established categories according to similarities and their natural relationships.
www.scandiaspa.com/aromatherapy-glossary-terms.html

the theoretical basis for classifying organisms.
scarab.msu.montana.edu/historybug/glossary.htm

The classification, especially of plants and animal, on the basis of differences and similarities between them.
www.twingroves.district96.k12.il.us/Wetlands/General/Terms.html

a classification of organisms into groups based on similarities of structure or origin etc

(biology) study of the general principles of scientific classification

practice of classifying plants and animals according to their presumed natural relationships
wordnet.princeton.edu/perl/webwn

第二类：

Taxonomy (from Greek ταξινομία (taxinomia) from the words taxis = order and nomos = law) may refer to either a hierarchical classification of things, or the principles underlying the classification. Almost anything, animate objects, inanimate objects, places, and events, may be classified according to some taxonomic scheme.
en.wikipedia.org/wiki/Taxonomy

二、其他：是分类法吗？

A scheme that partitions a body of knowledge and defines the relationships among the pieces. It is used for classifying and undertranding the body of knowledge. [22]
www.ee.oulu.fi/research/ouspg/sage/glossary/

A taxonomy is a hierarchical data structure or a type of classification schema made up of classes, where a child of a taxonomy node represents a more restricted, smaller, subclass than its parent. Also see Ontology above
www.xsb.com/glossary.html

The classification of items into larger categories. In the High School Transcript Study, the items are specific secondary school courses that are classified into broader groupings to define course content and level (eg, AP English, Remedial Math, Regular Science, and IB Social Studies).
nces.ed.gov/nationsreportcard/glossary.asp

A type of facet in which the headings are arranged into a hierarchy. This is the most broadly useful type of facet, since thousands of headings can be organized into a presentable selection.
facetmap.com/glossary/

controlled vocabulary used primarily for the creation of navigation structures for websites. Often based on a thesaurus, but may have shallower hierarchies and less structure, for example, no related terms.
members.optusnet.com.au/~webindexing/Webbook2Ed/glossary.htm

a set of controlled vocabulary terms, usually hierarchical. Once created, it can help inform navigation and search systems. An example of a simple or “enumerative” taxonomy: United States New York State New York City Manhattan
www.edtechpost.ca/pmwiki/pmwiki.php/Main/GlossaryAnalysis

The classification, nomenclature, and laboratory identification of organisms (Do not confuse with taxidermy – stuffing dead animals)
www.alken-murray.com/glossarybug2.html