What does molder mean?
A molder is anything that gives a material its shape by means of a mold: it may be a person, a hand tool, or an industrial machine. In American English, the word is especially associated with equipment that shapes plastics, metals, rubber, and other materials during manufacturing. An injection molder, for example, melts plastic and forces it into a mold to create a finished form. The word can also describe a person who works in molding, though this use is less frequent in everyday speech. Although “moulder” is a well-established British variant, “molder” is the more common form in contemporary American usage. The term is useful because it names the agent of the molding process while “mold” itself refers primarily to the form into which material is placed. In specialized contexts, however, the two words can be easily confused.
nounA person, tool, or machine that gives shape to a material by placing it in a mold. The term is also the American spelling of the rarer British form “moulder.”
- A person, tool, or machine that shapes material in a mold.
- The American spelling variant of “moulder.”
"The factory replaced its plastic molder with a newer, energy-efficient model."
"The injection molder produced several thousand plastic housings before lunch."
"As a young molder, she learned to form clay figures by hand."
The plural is used for multiple people, tools, or machines that perform a molding function.
"The factory operates three molders around the clock."
An American “molder” puts the finishing touches on objects by giving them their final shape.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of molder
“Molder” was formed in English by adding the agent or instrument suffix “-er” to “mold,” meaning a form into which material is shaped. The spelling “moulder” reflects the British form “mould,” while “molder” became established in American spelling. The words “mold,” “mould,” and “moulder” consequently share the same English root and refer to shaping material by means of a form.
How molder is actually used
In contemporary American English, “molder” is the usual form, especially in manufacturing. “Moulder” remains common in British English and is also encountered in historical or specialized writing. The word is more technical when it denotes a machine and more general when it denotes a person or implement that shapes material.
Easily confused with molder
“Moulder” is a chiefly British form of the word, while “molder” is the standard American spelling in most modern usage.
A “mold” is the hollow form into which material is placed, whereas a “molder” is the person, tool, or machine that shapes the material.