All terms are described in this link:

History note is explained better here.

Hope this helps

Vasumathi Sriganesh
CEO, QMed Knowledge Foundation
Chakala, Andheri East,  Mumbai 400099, India
Web:    Indian Medical Sites-

----- Original Message ----- 
From: "Melissa Kovac" <[log in to unmask]>
Subject: ? about MeSH thesaurus

Good morning/afternoon!

Anyone know the difference between the date in the History Note and the Date 
of Entry in a MeSH record?  I thought the date in the History Note was the 
year the term was added to the thesaurus, but maybe not ...?

Thank you!

Melissa Kovac, MA, MLIS