dromo-, drom-, -drome, -dromic, -dromical, -dromous

(Greek: running, course; race, racecourse)

oceanodromous
A reference to organisms that migrate only within the oceanic areas; for example, fish that migrate only within salt water.
orthodromic
1. Concerning movement of impulses in their normal direction.
2. A reference to nerve impulses moving in a normal direction.
palindromic (adjective), more palindromic, most palindromic
1. Descriptive of having a structure or composition that reads the same in both directions.
2. In medicine, relating to a disease that is recurring or repeating.
potanadromous
Fish which migrate within fresh water only; such as, in rivers.
prodromal
prodrome (prodroma, s; prodromata, pl)
1. A premonitory symptom or precursor.
2. A symptom indicating the onset of a disease.
syndrome
1. A group of symptoms that collectively indicate or characterize a disease, psychological disorder, or other abnormal conditions.
2. A group of related or coincident things, events, actions, etc.
3. The pattern of symptoms that characterize or indicate a particular social condition.
4. A predictable, characteristic pattern of behavior, action, etc., that tends to occur under certain circumstances.
5. A group of things or events that form a recognizable pattern, especially of something undesirable.
6. A set of signs and symptoms that tend to occur together and which reflect the presence of a particular disease or an increased chance of developing a particular disease.

The constellation of numbness of the neck, arms, and back with headache, dizziness, profuse sweating, and palpitations after eating Chinese food laden with monosodium glutamate (MSG) strongly suggests the Chinese restaurant syndrome.

Other examples include the acquired immunodeficiency syndrome (AIDS), the achoo syndrome, the alien hand syndrome, the sick building syndrome, the stiff baby syndrome, and many, many others.

The word syndrome has long been popular in medicine and, more recently, outside medicine (as in the "China syndrome"). The word comes from Greek syn-, "together" plus dramein, "to run"; that is, "to run together", or "to go together". A common misspelling: syndrone.