The initial portion of some extended thing.
The act of doing that which begins anything; commencement of an action, state, or space of time; entrance into being or upon a course; the first act, effort, or state of a succession of acts or states.
That which is begun; a rudiment or element.
That which begins or originates something; the source or first cause.
Of or relating to the first portion of some extended thing.
A defined part of a section.
An informal taxonomic category below section and above family.
A subpart of a legal document such as law.
A taxonomic rank below the section, but above the species.
To insert subsections (into some text, etc.).