Definitions:

1. In metaphorical use, refers to an abstract or comprehensive inclusion or surrounding. NOUN
   • The envelopment of the mind in deep thought can lead to new insights.
2. In military context, refers to a tactical maneuver in which force attempts to surround an enemy to cut off their retreat or supply lines. NOUN
   • The general planned an envelopment of the enemy forces to trap them in the valley.
3. Refers to the act of wrapping or enclosing something completely. NOUN
   • The envelopment of the valley by fog created an eerie atmosphere.

Synonyms:

• Encirclement
• enclosure
• engulfment
• surrounding
• wrapping