Nomenclature and stereochemistry of steroids

, "a name," from Middle French nomenclature (16c.), from Latin nomenclatura "calling of names," from nomenclator "namer," from nomen "name" (see name (n.)) + calator "caller, crier," from calare "call out" (see claim (v.)).

Nomenclator in Rome was the title of a steward whose job was to announce visitors, and also of a prompter who helped a stumping politician recall names and pet causes of his constituents. Meaning "list or catalogue of names" first attested 1630s; that of "system of naming" is from 1660s; sense of "terminology of a science" is from 1789.

Project Learning Tree (PLT) is an award-winning environmental education program designed for teachers and educators of students in pre-kindergarten through grade 12. The PLT Activity Guides are available from participating in a one day workshop. Find more information about Texas PLT and workshops near you at http:/// . If you can’t find a workshop in your area, contact us to schedule one at your facility.

The following activities relate to Tree Identification from the PLT PreK-8 Activity Guide:

Nomenclature and stereochemistry of steroids

nomenclature and stereochemistry of steroids

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