Gr. arachne = spider, and eidos = resemblance. From this root came the Latin term arachnoides = spider-like. Used to describe the coweb-like membrane covering the brain and spinal cord.
L. arena = "sand". Viewed in cross-section, arenaviruses contain grainy particles that are ribosomes acquired from their host cells. It is from this characteristic that they acquired the name arena,…
L. area = a courtyard or space, and diminiutive suffix –ola. A term used in several ways, but especially applied to the pigmented area around the nipple.
Gr. perhaps from aer = air, and terein = to keep. This derivation suggests the ancient belief that arteries were windpipes. Adopted into Latin as arteria with the same meaning until the time of Harvey.
L. articulus, diminuitive or arthus = joint, and atio = a suffix, originally denoting action.
Gr. arytaina = a pitcher, and eidos = resemblance. The arytenoid cartilages were thought to resemble little pitchers.
Gr. askos = a bag or bladder. Applied to a fluid-filled abdomen, often seen in liver cirrhosis.
Gr. a = not, and stigma = a point. Hence a failure of the eye to focus light on the retina.
Gr. astron = a star, and kytos = a vessel or cell. Applies to star-shaped cells.
Gr. a = not, taxis = order, ia = condition. Applied to a lack of muscular coordination.