1 A manâs tactile sensitivity is limited to his genital region, the mouth and ears. 2  Their erogenous zones are also breeches and loin regions, shoulders and cervical spine, back of the head, eye area, underarms, inner surface of hips, nipples.
terra firma. A Latin phrase meaning firm ground, used to mean the land as opposed to the sea. Noun. 1. terra firma - the solid part of the earth's surface; the plane turned away from the sea and moved back over land; the earth shook for several minutes; he dropped the logs on the ground. dry land, ground, solid ground, earth, land.
The Firmicutes (Latin: firmus, strong, and cutis, skin, referring to the cell wall) are a phylum of bacteria, most of which have Gram-positive cell wall structure. A few, however, such as Megasphaera, Pectinatus, Selenomonas and Zymophilus, have a porous pseudo-outer membrane that causes them to stain Gram-negative.