peri-

(Greek: around, enclosing, surrounding, about, near, close; often used as a prefix)

periatrial
Around one or both atria (two smaller chambers) of the heart.
periauricular
Situated around or near the ear.
periaxial
1. Surrounding an axis.
2. Near or around an axis.
periaxillary (adjective) (not comparable)
Surrounding, around, or adjacent to the armpits: Neal went to the doctor to find out why he had periaxillary pains in both of his arms.
periaxonal
Surrounding or encircling an axon or a long fiber of a nerve cell (a neuron) that acts somewhat like a fiber-optic cable carrying outgoing (efferent) messages.
periblast
1. The protoplasmic matter which surrounds the entoblast, or cell nucleus, and undergoes segmentation.
2. A specialized region of yolk surface immediately peripheral to the blastoderm in telolecithal eggs.

The layer does not take part in the formation of the embryo but it is supposed to break down yolk and make it available to the embryo.

peribolos
In ancient architecture, an inclosed court; especially, one surrounding a temple.
peribranchial
1. Around the bronchi or bronchial tubes; as, the peribronchial lymphatics.
2. Surrounding the branchiae; such as, a peribranchial cavity.
peribronchial
Adjacent to or surrounding a bronchus.
peribronchiolar
Adjacent to or surrounding a bronchiole.
peribronchiolitis
Inflammation of the tissues surrounding the bronchioles.
peribronchitis
Inflammaton of the tissues surrounding the bronchi.
peribrosis
Ulceration of the lateral or medial aspects of the eyelids.
peribuccal
Surrounding or around the cheek.
peribulbar
1. Surrounding the eye.
2. Pertaining to the tissues immediately surrounding the eye.

Related "around, round, surrounding" units: ambi-; ampho-; circ-; circum-; cyclo-, -cycle; gyro-.