glacis plate: meaning, definition, pronunciation and examples
Low (specialized technical term)Technical/Formal (Military engineering, armor design, historical fortification)
Quick answer
What does “glacis plate” mean?
A sloped, armored section of a military fortification or vehicle (especially a tank), designed to deflect incoming projectiles.
Audio
Pronunciation
Definition
Meaning and Definition
A sloped, armored section of a military fortification or vehicle (especially a tank), designed to deflect incoming projectiles.
A plate or surface intentionally sloped to cause impacting objects, such as missiles, bullets, or kinetic energy penetrators, to ricochet or lose penetrative force.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Both use the same term.
Connotations
Highly technical with connotations of military hardware, engineering design, and historical warfare.
Frequency
Extremely low frequency in general language, limited to highly specialized military, engineering, and historical contexts in both varieties.
Grammar
How to Use “glacis plate” in a Sentence
[Vehicle/Tank] has/had a [thick/angled] glacis plate.The projectile struck/deflected off the glacis plate.The design featured a heavily sloped glacis plate.Vocabulary
Collocations
Examples
Examples of “glacis plate” in a Sentence
verb
British English
- The engineers sought to glacis-plate the front of the vehicle for better deflection. (rare, non-standard)
American English
- The design team recommended glacising the frontal plate. (rare, non-standard)
adjective
British English
- The glacis-plate design proved superior in tests.
American English
- The tank's glacis-plate slope was a critical survivability feature.
Usage
Meaning in Context
Business
Unused
Academic
Used in military history, engineering design, and materials science papers discussing armor effectiveness.
Everyday
Virtually unused except by military enthusiasts.
Technical
Core term in tank/armored vehicle design, ballistic engineering, and historical fortification analysis.
Vocabulary
Synonyms of “glacis plate”
Strong
Neutral
Weak
Vocabulary
Antonyms of “glacis plate”
Watch out
Common Mistakes When Using “glacis plate”
- Misspelling as 'glassis plate' or 'glacier plate'.
- Using it to refer to any flat piece of armor rather than specifically a sloped one.
- Pronouncing 'glacis' with a hard 'c' (/k/) instead of the soft 'c' (/s/).
FAQ
Frequently Asked Questions
No, while most commonly associated with tanks and armored fighting vehicles, the term originates from static fortifications where a 'glacis' was a long, sloping earthwork designed to protect castle or fortress walls.
Yes, primarily in geography, a 'glacis' can refer to a gentle slope or a plain, often formed by erosion. However, this usage is separate from the military term.
Sloping increases the effective thickness of the armor relative to the path of the projectile (line-of-sight thickness) and increases the likelihood of a ricochet, thereby dissipating the projectile's energy.
In British English, it's commonly pronounced /ˈɡlæs.i/ (GLASS-ee). In American English, the French-derived /ˈɡleɪ.sɪs/ (GLAY-sis) or /ˈɡlæs.ɪs/ (GLASS-iss) are also heard, especially in military circles.
A sloped, armored section of a military fortification or vehicle (especially a tank), designed to deflect incoming projectiles.
Glacis plate is usually technical/formal (military engineering, armor design, historical fortification) in register.
Phrases
Idioms & Phrases
- “None”
Learning
Memory Aids
Mnemonic
Think of a 'glacier' sliding down a slope; a 'glacis plate' is a sloped plate that makes threats 'slide off' a tank.
Conceptual Metaphor
PROTECTION IS DEFLECTION / SECURITY IS AN ANGLE
Practice
Quiz
What is the primary function of a glacis plate?