capacity
Meaning
The maximum amount that something can contain or produce.
The ability or power to do, experience, or understand something.
A specified role or position.
Structure
Usage
The stadium has a seating capacity of 80,000.
She has a great capacity for learning languages.
He was acting in his capacity as a legal advisor.
Etymology
The word 'capacity' originates from the Latin 'capacitas', which itself derives from 'capax', meaning 'able to hold much'. The root 'cap-' comes from the Latin verb 'capere' (to take, seize, hold), a verb with a rich history traceable to the Proto-Indo-European root kap-, meaning 'to grasp'. The suffix '-acity' evolved from Latin '-acitas', a compound used to form abstract nouns expressing a state or condition. Thus, the literal "state of holding" evolved logically into the modern abstract meanings of containing volume, mental ability, or fulfilling a role, all conceptually linked to the idea of having room or capability to "hold" something, whether physical or abstract.
Analysis
cap (from Latin 'capere', meaning to take, seize, hold); acity (a noun-forming suffix from Latin '-acitas', indicating a state, condition, or quality).