hypotony

This term is a specialized medical descriptor used primarily in clinical neurology and pediatrics. It describes a physiological state of decreased muscle resistance to passive stretch, often resulting in a "floppy" appearance in infants. It is a descriptive finding rather than a disease itself, frequently serving as a symptom of an underlying neurological or genetic condition.

Because it refers to a specific physiological state or condition, the word is treated as an uncountable noun. It does not typically take a plural form in medical literature, as it describes a general state of tension rather than individual instances of a condition.