demonstrative pronoun, accusative singular neuter form of ettaka (so much, this much)
Analysis. ett- (demonstrative stem, related to ettha 'here') + -aka (diminutive or specified-amount suffix); the accusative singular neuter -ṁ ending marks the object or extent of the action.
Etymology. From the demonstrative root ett-, cognate with ettha ('in this place'); the suffix -aka specifies a particular quantity or extent. Compare Sanskrit etad ('this').
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
Lite mode — plain HTML for e-readers and old browsers. Full version