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actionis

Actionis is the genitive singular form of the Latin noun actio, which means action, act, doing, or a lawsuit. Actio is a feminine noun of the third declension; its nominative singular is actio and the genitive singular is actionis. As a result, actionis is commonly encountered in Latin texts as “of action” or “of the action.” The root actio derives from the verb agere, “to do” or “to drive,” and it yields many modern terms in Romance languages and English, such as action, active, and actor.

In classical Latin, actio can denote a general sense of an act or doing, and it is

Today, actionis primarily appears in scholarly Latin or in the analysis of Roman legal texts. It is

especially
associated
with
legal
contexts
as
the
concept
of
a
formal
action
or
lawsuit
before
a
magistrate.
In
Roman
law,
actio
referred
to
a
procedural
remedy
or
form
of
action;
many
specific
actions
were
developed
within
the
law
of
obligations,
contracts,
and
delict.
The
genitive
form
actionis
appears
in
legal
phrases
to
specify
the
subject
matter
or
scope
of
the
action,
often
indicating
the
type
or
purpose
of
the
action.
used
in
grammars
and
dictionaries
to
illustrate
noun
declension
and
the
relationship
of
genitive
forms,
rather
than
as
a
current
term
in
modern
legal
or
linguistic
practice.
In
English-language
discussions,
actionis
is
typically
cited
only
as
the
Latin
genitive
of
actio.