longitudinal
B2CEFR level
58/100Rarity: uncommon
TechnicalRegister
Medicine adjective
Relating to observation or data gathered over an extended period.
The discharge summary referenced longitudinal notes from the patient's primary care record.
Business adjective
Involving repeated observations of the same subjects over an extended period.
A longitudinal study of the cohort revealed that engagement, not sign-up source, drove lifetime value.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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