Metal door is spelled using the phonetic transcription /ˈmɛtəl dɔːr/. In this transcription, the stress is on the first syllable of "metal" and the second syllable of "door". "Metal" is spelled with an "e" after the "m" and "t" because it is a short vowel sound, whereas the "o" in "door" is a long vowel sound and is spelled with two "o's". The "r" at the end of both words is pronounced but not emphasized. Overall, the spelling of "metal door" accurately reflects its pronunciation.
A metal door refers to a sturdy and robust barrier made primarily from metal materials that is designed to control access and secure entry points in various structures such as buildings, factories, homes, offices, and commercial establishments. These doors are constructed using different types of metals such as steel, aluminum, iron, or a combination thereof, to ensure durability and strength.
Metal doors are widely recognized for their enhanced resistance against forced entry, vandalism, fire, and adverse weather conditions. They typically consist of a rigid frame combined with metal panels that are interconnected using welding, riveting, or locking mechanisms, resulting in a solid unit capable of withstanding external pressures and impacts.
These doors often feature additional security features like multipoint locking systems, reinforced hinges, and anti-theft devices to enhance their protective capabilities. While they are commonly found in exterior applications, metal doors can also be utilized indoors, especially in areas where increased security is required.
Apart from their security attributes, metal doors can also provide insulation properties, contributing to improved energy efficiency by minimizing heat loss or gain. Depending on specific needs, metal doors can be customized to meet various aesthetic preferences, essential functions, and size requirements.
Overall, metal doors are known for their resilience, longevity, versatility, and superior security features, making them an essential component in ensuring safety, privacy, and protection from potential threats in both residential and commercial settings.
The word "metal" originated from the Latin word "metallum", which came from the Greek word "metallon", meaning "mine" or "quarry". It had its roots in the Proto-Indo-European word "med-", which meant "to measure" or "to take appropriate measures". "Metal" referred to any material that could be mined or quarried, particularly those materials that were strong, durable, and instrumental in creating tools, weapons, and other useful objects.
The word "door" originated from the Old English word "dur", which can be traced back to the Proto-Germanic word "durz", meaning "door" or "gate". It is also related to the Old Norse word "dyrr", the Old High German word "turi", and the Gothic word "daur", all of which have similar meanings.