Biology (anatomical terms)
Sagittal plane
A cut divining the body into right and left halves; mid-sagittal into equal halves. Divide into right/left halves
Frontal plane
A cut that divides the body into dorsal and ventral halves. Side of body. Front/back halves
Transverse plane
A cut that is perpendicular to the anterior/posterior axis; a cross section. Top/bottom
Anterior
Along the front surface or towards the head. Term means "in front of" (posterior)
Distal
Toward the end of the appendage farthest away from the body or point of attachment ( proximal)
Proximal
Toward the end of the appendage nearest the body or point of attachment (distal)
Cranial
Toward the head (caudal)
Medial
Toward the middle of the body (lateral)
Caudal
Toward the tail (cranial)
Dorsal
Toward the upper surface or along the back; sometimes synonymous with posterior (ventral)
Ventral
Towards the lower surface or along the front; sometimes synonymous with anterior (dorsal)
Posterior
Along the rear surface or towards the tail. Term means "in back of" (anterior)
Lateral
Away from the midline of the body; toward the side (medial)