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Subpart

Subpart is a noun referring to a part of a thing that is itself a part of a larger whole. It is used to denote a subdivision of a component, assembly, or document. The term appears in technical, engineering, architectural, and legal contexts, where complex systems or regulations are organized hierarchically.

In engineering and manufacturing, a subpart often means a subassembly or subcomponent within a larger product.

In legal and regulatory texts, subparts divide Parts, Titles, or Chapters into more manageable sections. Subparts

Subpart is often contrasted with part, section, and subdivision terms, and its use depends on the governing

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For
example,
the
wiring
harness
of
a
vehicle
can
be
described
as
a
subpart
of
the
electrical
system.
Subparts
are
typically
identified
within
drawings
or
bills
of
materials
to
reflect
the
structure
of
the
system.
usually
have
letter
designations
such
as
Subpart
A
or
Subpart
B
and
may
contain
specific
requirements
or
exemptions.
For
example,
a
regulation
may
prohibit
certain
activities
in
Subpart
C
and
provide
definitions
in
Subpart
D.
document's
hierarchical
scheme.
The
plural
form
subparts
denotes
multiple
subdivisions.
The
term
dates
from
sub-
meaning
under
or
subordinate
and
part,
reflecting
its
function
as
a
subordinate
division.