stheno-, sthen-, -sthenia, -sthenic, -asthenic

The condition of abnormally great glandular activity.

Instability or loss of tone in the vascular system.

1. The pressure of the blood on the walls of the arteries, dependent on the energy of the heart action, the elasticity of the walls of the arteries, and the volume and viscosity of the blood.
2. The tension in a blood vessel.

Strengthening or invigorating.

1. Relating to or exhibiting asthenia; weak.
2. Having a slender, lightly muscled physique.

1. A period of reduced metabolic activity (chemical and physical processes involved in the maintenance of life).
2. Either the condition of an inactive larva not yet metamorphosed to a pupa or autointoxication, particularly among insects.

An unexplained fear of weakness; such as by losing one’s physical, social, or some kind of political control. It may also be a fear of fainting.

Eye weakness, or strain; often causing headache, ocular discomfort, dimness of vision, etc.

1. Gymnastic exercises designed to develop muscular tone and promote physical well-being: "Sit-ups, trunk twists, and other calisthenics are demonstrated at the sports center."
2. The practice or art of such exercises: "Calisthenics is recommended to relax the muscles before a long run."
3. From Greek kalli-, "beautiful" (kallos, "beauty") plus sthenos, "strength".

Abnormal strength, or excessive tension, of the entire body or a part of the body.

Abnormal muscle fatigue or weakness.