outgas - Master This Word
Master this word with our 5-step learning method – Learn English in English
outgas Word Meanings
- to release gas from a material
- to expel gas from a solid or liquid
- to undergo desorption of gases
outgas Example Sentences
Example sentences are the start of understanding. Don't rush to memorize. First feel how the word works in a sentence.
outgas Phonetic & Pronunciation
UK
/aʊtˈɡæs/
US
/aʊtˈɡæs/
outgas Word Etymology
Outgas is composed of 'out-' meaning 'from within' and 'gas' from Latin 'gas' (a term introduced in the 17th century). Picture a balloon releasing air as it changes shape; that visual helps remember that outgassing is about gas escaping from materials.
Note 1: These definitions and etymologies are not standard dictionary definitions, but extended explanations provided to help with memorization and understanding of the actual application of words. Through this background information, we strive to make words more vivid and easier to understand, and help you remember their meanings in real life.
Note 2: LexiTalk designs the learning flow around the linguistics principle of “Comprehensible Input.” When learners encounter material that is slightly above their level but still understandable from context, the brain naturally absorbs the language. That’s why we keep every word inside authentic contexts, using examples and associations to help you understand it and use it flexibly.
Read the FAQ explanation of Comprehensible InputReal Context
Outgas is a verb used mainly in science and industry to describe the release of gas from a solid or liquid material. In practice, it can mean a material slowly shedding trapped gases, or a process where adsorbed molecules detach and migrate into a surrounding space. The term covers both natural desorption and pressure-driven gas evolution during manufacturing, curing, or aging. People may notice outgassing as changes in odor, pressure buildup, or shifts in vacuum levels in polymers, coatings, or housing components. Understanding outgassing helps in selecting materials for airtight enclosures, vacuum chambers, sealants, or spacecraft interiors, where trapped gases can contaminate experiments, degrade performance, or complicate measurements.
Usage Reminders
- Remember: outgas describes gas escaping from within a material
- Different from evaporation or boiling
- In vacuum work, outgassing can contaminate surfaces
- Temperature, time, and material type affect how much gas is released
- Some materials outgas initially but then settle down with bake-out or aging
- Use precise terms like desorption for molecules detaching from a surface
Common Misconceptions
- Outgassing only happens with plastics or polymers
- All outgassed gases are dangerous or toxic
- Outgassing means a material will suddenly explode
- If a device is in air, outgassing is irrelevant
- Outgassing is the same as evaporation or boiling
Thinking Differences
Learners think of gas release as a simple, observable phenomenon and often picture a balloon. In technical English, outgas is a precise term for gas escaping from within a material, not just any emission.
Learning Tips
- Practice the prefix 'out-' as 'from inside to outside' to remember the direction
- Link outgas with desorption for molecules leaving a surface
- Differentiate from evaporation by focusing on solids/liquids releasing trapped gas
- Visualize sealed enclosures when learning technical contexts
- Learn common contexts: polymers, coatings, vacuum systems
- Use the term in one technical sentence per week
5-Step Learning Method - Learn English in English
Step 1: Meaning
What does the word 'outgas' mean?
A.To release gas or vapor from solid materials
B.To expel liquid from a container
C.To increase oxygen levels in water
D.To remove excess moisture from soil
Step 2: Usage
Which sentence correctly uses the word 'outgas'?
A.The toxic materials began to outgas harmful fumes.
B.The chef decided to outgas the soup for better flavor.
C.I need to outgas the laundry before putting it away.
D.She will outgas the juice to make it less sweet.
Step 3: Similar Words
Which word is most similar to 'outgas'?
A.Condense
B.Evaporate
C.Soak
D.Freeze
Step 4: Opposite Words
What is the opposite of 'outgas'?
A.Vaporize
B.Release
C.Absorb
D.Refrigerate
Step 5: Mastery
Can you think of a real-life context where 'outgas' would apply?
A.A scientist monitoring gas emissions from a chemical reaction.
B.A factory that emits smoke during production.
C.Someone baking bread in an oven.
D.A plant absorbing sunlight during the day.
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