- A substance added to another substance to modify, dilute, or add to it.
- One who or that which extends or stretches.
- A surveyor; one who appraises landed property.
- One who, or that which, extends or stretches anything.
- Any of various substances designed to <xref>extend</xref> any of several properties of a material.
- Any of various components designed to extend the length of a device.
- Another term for <xref>runner</xref> or <xref>quick-draw</xref>. (from sense #2)