What are seed keywords?

What are seed keywords?

Seed keywords are words you use to initiate determining keywords.
Here's a page that explains the concept.
http://www.sitepoint.com/organize-keyword-research/

As a definition, Seed keywords are the words which will be used as our base keywords. Most of us tend to think of keywords from our own perspective as business owners, not from that of potential customer(s) searching for our products and services.

Seed keywords are words you use to begin determining keywords.

Seed keywords are base keywords of website.