troch-, trocho- +

(Greek: that which is round[ed]; a wheel, a disk)

trochal
Resembling or revolving like a wheel.

From Greek trokhos, "wheel", from trekhein, "to run".

trochanter
Either of the two bony prominences at the upper end of the femur lateral to and below its neck.
trochanteritis
An inflammation around the greater trochanter.

It often involves the trochanteric bursa.

trochlea
An anatomic part or structure that resembles a pulley, either in form, as that of the humerus or talus; or in function, as that of the superior oblique muscle of the eye.
trochlear
In anatomy, relating to a trochlea, or to any other pulley-shaped part or structure.
trochlear nerve
The fourth cranial nerve, innervating the superior oblique muscles of the eyes.
trochleariform
In the shape, or form, of a pulley.
trochocardia
Rotary displacement of the heart on its axis.
trochocephalia, trochocephaly
Roundheadedness, a deformity due to premature union of the frontal and paricetal bones.
trochoid
1. A curve formed by a point on the radius of a circle, or on the extended radius, as the circle rolls along a straight line.
2. Rotating, showing rotation, or able to rotate about a central axis.
3. Resembling or functioning in the body like a pivot or pulley; pivot-like, or pulley-shaped.
trochoid articulation, pivot joint
A synovial joint in which a section of a cylinder of one bone fits into a corresponding cavity on the other, as in the proximal radioulnar joint.
trochoidal
Of or pertaining to a trochoid (curve described by any point in a wheel rolling on a line); having the properties of a trochoid.
trochoides
A pivot or rotary joint.
trochomancy
Divination by looking at wheel tracks.
trochometer
A contrivance for computing the revolutions of a wheel; an odometer.