sac - Master This Word
Master this word with our 5-step learning method – Learn English in English
sac Word Meanings
- a bag or pouch
- a bodily cavity or sac-like structure
sac Example Sentences
Example sentences are the start of understanding. Don't rush to memorize. First feel how the word works in a sentence.
sac Phonetic & Pronunciation
UK
/sæk/
US
/sæk/
sac Word Etymology
Root: 'sac' (Latin saccus, meaning 'bag'). Historical Origin: Latin → Old French → English. Memory Image: Picture a medicine pouch carried by doctors in old times, illustrating the idea of a 'sac' holding essential items for healing.
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
An older yet still useful word in English, sac means a bag, pouch, or pocket that holds things. You can talk about a leather sac for coins, a small medical sac carried by a doctor in stories, or the body’s own sac such as the amniotic sac surrounding a developing baby, or a synovial sac in a joint. In biology and medicine, sac is often paired with another noun (sac of blood, sac of fluid) to describe a enclosing cavity or container. Be careful not to confuse sac with sack, which is usually a sturdy bag made of fabric and carried or hung.
Usage Reminders
- Sac is not the same as sack; think container or cavity, not a fabric bag.
- In anatomy, sac often pairs with another noun (sac of fluid).
- Use sacs in plural when there is more than one.
- Don’t mix sac with bag in everyday talk.
- When talking about clothes or carry, prefer sack or bag.
Common Misconceptions
- Sac always means a body cavity, not a bag.
- Sac and sack are interchangeable in everyday speech.
- Sac can only be found in biology, not in everyday objects.
- All sacs contain liquids; some hold solids or air.
- Sacs are always single; there is no plural form.
Thinking Differences
Explain to an English speaker that sac is a specialized term; it can be everyday as a bag, but in science it names a hollow structure.
Learning Tips
- Practice distinguishing sac from sack in context.
- Remember sacs can be body cavities or bags in stories.
- Use examples with liquids (sac of fluid) to show meaning.
- Plural sacs appears with multiple sacs in anatomy.
- Avoid translating sac to bag in medical texts, use bag instead.
- When in doubt, check if the word refers to a container inside the body.
5-Step Learning Method - Learn English in English
Step 1: Meaning
What is the definition of the word 'sac'?
A.A small bag or pouch in the body that holds substances
B.A container used for carrying groceries
C.A type of fabric used in clothing
D.A large, rigid structure for storing items
Step 2: Usage
Which sentence uses the word 'sac' correctly?
A.He placed the fruits in a sac for easier carrying.
B.The artist painted a beautiful sac on the canvas.
C.The sac of the vacuum cleaner was full of dust.
D.She used a sac to carry her ideas to the meeting.
Step 3: Similar Words
What is a synonym for 'sac'?
A.Bag
B.Container
C.Pouch
D.Basket
Step 4: Opposite Words
What is an antonym for 'sac'?
A.Container
B.Opening
C.Gap
D.Void
Step 5: Mastery
Can you think of a real-life context where a sac is important?
A.A person might need a bag for a shopping trip.
B.A dog might carry its toys in a basket.
C.A surgeon might carefully remove a sac from the body during an operation.
D.An athlete uses a backpack to store their gear.
Related Listening
🔥 Advanced
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