-ulus, -olus, -ulum, -ola

(Latin: suffix; little, small)

A small tile used in mosaics.
altocumulus (s) (noun), altocumuli (pl)
Clouds that are formed of rounded in fleecy white or gray masses: The altocumuli of cloud elements usually are sharply outlined, but they may become partly fibrous or diffuse and they may or may not be merged together at an intermediate altitude of about 2,400 to 6,000 meters (8,000 to 20,000 feet).
annulus (s), annuluses, annuli (pl)
A ringlike structure, or any body part that is shaped like a ring; which is applied to many small ring-shaped structures; such as, parts in a plant or animal, for example, a growth ring on fish scales.

The base of a heart valve that supports the valve's leaflets is called the annulus and a ring-shaped pancreas that encircles the duodenum is an annular pancreas.

Annulus is a misspelling of the Latin anulus, "a little ring", the diminutive of the Latin anus, "a ring of more substantial size"; so, keep in mind that anulus is now the preferred spelling for any "ringlike structure" reference.

1. A general anatomic nomenclature for a circular or ringlike structure; also written as annulus; however, some sources state that the spelling anulus is currently preferred.
2. In zoology, a ring-shaped structure; such as, any of the external segments of an annelid worm.
anulus ciliaris, ciliary body
A thickened portion of the vascular tunic of the eye between the choroid and the iris.

It consists of three parts or zones: orbiculus ciliaris, corona ciliaris, and ciliary muscle.

anulus iridis minor
The lesser ring of the iris; the more coarsely striated inner concentric circle on the anterior surface of the iris; also called "lesser circle of iris".
anulus iridis, border of iris, ring of iris
Either of two zones on the anterior surface of the iris, separated by a circular line concentric with the pupillary border.
anulus lymphaticus cardiae
A cardiac lymphatic ring which is a chain of lymph nodes (paracardial lymph nodes) around the cardiac opening of the stomach.
anulus ovalis, limbus fossae ovalis
A muscular ring surrounding the fossa ovalis in the wall of the right atrium of the heart.
bibliobibulus (s) (noun), bibliobibuli (pl)
1. People who read too much, and so are oblivious of the real world.
2. Anyone who gets "drunk on books" or who reads too much; excessive reading.

There are people who read too much: The bibliobibuli. I know some who are constantly drunk on books, as other men are drunk on whiskey or religion.

They wander through this most diverting and stimulating of worlds in a haze, seeing nothing and hearing nothing.

—H. L. Menchken (1880-1956)
A nodule or abscess along a lymphatic vessel; especially, one on the dorsum of the penis.
Cup-shaped or bud-shaped structure; calycle.