Introduction. The asthenosphere is the layer of the Earth that lies below the lithosphere. It is a layer of solid rock that has so much pressure and heat the rocks can flow like a liquid.The rocks are less dense than the rocks in the lithosphere.ntroduction. The asthenosphere is the layer of the Earth that lies below the lithosphere. It is a layer of solid rock that has so much pressure and heat the rocks can flow like a liquid.
Dictionary entry overview: What does directive mean? â¢ DIRECTIVE (noun) The noun DIRECTIVE has 1 sense: 1. a pronouncement encouraging or banning some activity Familiarity information: DIRECTIVE used as a noun is very rare. â¢ DIRECTIVE (adjective) The adjective DIRECTIVE has 1 sense: 1. showing the way by conducting or leading; imposing direction on
Written directive means an authorized user's written order for the administration of byproduct material or radiation from byproduct material to a specific patient or human research subject, as specified in Â§ 35.40. [69 FR 55737, Sep. 16, 2004; 70 FR 16361, Mar. 30, 2005; 71 FR 15008, Mar.ritten directive means an authorized user's written order for the administration of byproduct material or radiation from byproduct material to a specific patient or human research subject, as specified in Â§ 35.40. [69 FR 55737, Sep. 16, 2004; 70 FR 16361, Mar. 30, 2005; 71 FR 15008, Mar.