spasticity
UK[spæˈstɪsɪti]US[spæˈstɪsɪti]
n
a condition in which muscles become stiff and tight, interfering with movement, often as a result of damage to the brain or spinal cord.
Morpheme Breakdown
spastic
ity
spastic
of spasms
ity
state or condition
Etymology
the word 'spasticity' has a clinical lineage tracing back to ancient greek. its core, 'spastic', originates from the greek verb 'span', meaning 'to draw, pull, or convulse', which evolved into 'spastikos', an adjective describing something prone to spasms or convulsive pulling. this medical term entered late latin as 'spasticus'. in english, the latin-derived noun-forming suffix '-ity', denoting a state or condition, was appended to the adjectival 'spastic'. thus, the literal 'state of being spastic' evolved into its precise modern neurological meaning: the pathological condition of muscles exhibiting increased tone and involuntary stiffness due to disrupted signals from the central nervous system.
Analysis
Structure: spastic (of spasms) + ity (state or condition)
spastic: from latin spasticus, from greek spastikos 'drawing in, pulling', from span 'to draw, pull'. functions as the adjectival root describing the nature of the condition.
ity: from latin -itas, a suffix forming nouns indicating a state or condition. functions as a noun-forming suffix.
Examples
the patient's spasticity made it difficult for him to extend his arm fully.
physical therapy can help manage the muscle spasticity caused by cerebral palsy.
the medication was prescribed to reduce spasticity and improve mobility.