A '''stem''' is a thin piece of material which usually connects something. It is commonly thought of as: "The axis of a [[plant]], whether above or below ground, which ordinarily grows in an opposite direction to the root or descending axis." <ref>http://dictionary.reference.com/browse/stem</ref> | A '''stem''' is a thin piece of material which usually connects something. It is commonly thought of as: "The axis of a [[plant]], whether above or below ground, which ordinarily grows in an opposite direction to the root or descending axis." <ref>http://dictionary.reference.com/browse/stem</ref> |