acro-, acr- +

1. The partial or total surgical excision of the acromion.
2. Resection of the distal end of the acromion, done in the treatment of acromioclavicular arthritis.

The acromion is the lateral extension of the spine of the scapula, projecting over the shoulder joint and forming the highest point of the shoulder; also called the acromial process and acromion scapulae.

The surgical removal of the distal inferior acromion process of the scapula to relieve impingement of soft tissues in the subacromial space.

Prominence of the navel, as may be seen in umbilical hernia.

A fungal infection of the limbs.

1. Contracture of the hand or foot resulting in spastic deformity.
2. Myotonia affecting the extremities only, resulting in spasmodic deformity of the hand or foot.

Having both acrid (sharp, pungent) and narcotic qualities.

Any neuropathy of the extremities.

Happening at sunset or in the evening, as the rising of a star.

Happening in the evening or at night-fall, vespertine, as the acronychal rising or setting of a star. Sometimes this term is used as if “rising in the evening or at sunset and setting at sunrise”; but this is not correct. When the rising is acronychal, the setting is cosmical, and vice versa. (According to the Oxford English Dictionary).

Having claws, nails, or hoofs.

A word formed from the first (or first few) letters of a series of words; such as, radar (radio detecting and ranging): "Some people are confused by what appears to be too many acronyms; especially, on the internet and by government organizations."

Chronic incurable insanity.

1. Description of a word formed from the first (or first few) letters of a series of words; as with radar, which comes from radio detecting and ranging; NATO, which comes from North Atlantic Treaty Organization; scuba, which comes from self-contained underwater apparatus; and sonar, which comes from sound navigation ranging.
2. Characteristics of words created from the initial letters of a phrase; for example, "Random Access Memory" becomes RAM, pronounced as the word "ram"; and the scientific term LASER is a result of "Light Amplification by Stimulated Emission of Radiation".

A word (tip-name) formed from the initials or other parts of several words, e.g., NATO, from the initials of the North Atlantic Treaty Organization.

In-growing nail (on the hand or foot); in-grown fingernail or toenail.