glucose - Master This Word
Master this word with our 5-step learning method – Learn English in English
glucose Word Meanings
- a simple sugar essential for energy in living organisms
- a type of carbohydrate
- a basic fuel for cells in the body
glucose Example Sentences
Example sentences are the start of understanding. Don't rush to memorize. First feel how the word works in a sentence.
glucose Phonetic & Pronunciation
UK
/ˈɡlʊ.kəʊs/
US
/ˈɡluː.koʊs/
glucose Word Etymology
Root decomposition: 'gluc-' (sweet) + '-ose' (sugar). Historical origin: Greek 'glykys' → Latin 'glucos' → French 'glucose' → English. Memory image: Imagine sweet, sticky honey that provides immediate energy, like the vitality of a buzzing bee.
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
Glucose is a simple sugar that circulates in the blood and serves as a primary source of energy for nearly all living cells. As a monosaccharide, it is a building block for larger carbohydrates and plays a central role in metabolism, including glycolysis and cellular respiration. In biology and medicine, glucose levels are routinely measured to assess health, while in nutrition it is recognized both as an essential nutrient and a source of quick energy. The word itself comes from the Greek glykys meaning sweet, and in everyday English you will often see phrases like blood glucose, glucose tolerance, or glucose metabolism to describe how the body uses this sugar. It is a staple term in labs and classrooms alike.
Usage Reminders
- Glucose is a sugar, not a protein or fat.
- Pronounce it GLOO-kohs.
- When talking about the substance, use glucose as an uncountable noun (blood glucose, glucose level, glucose tolerance).
- Avoid the older term glycose.
- In biology and medicine, glucose is a central energy source for cells.
Common Misconceptions
- Glucose is a vitamin.
- All sugars are glucose.
- Glucose and glycogen are the same substance.
- You can drink glucose directly and it will not affect blood sugar.
- Glucose is irrelevant to health.
Thinking Differences
English learners encounter glucose as a precise lab term with many fixed collocations (blood glucose, glucose tolerance). They often confuse it with generic 'sugar' or think all sugars are glucose. Plural forms are rarely used in normal speech, and linking with insulin or metabolism is common yet tricky.
Learning Tips
- Practice the pronunciation: GLOO-koze.
- Remember it is a sugar, not a vitamin or fat.
- Pair with phrases like blood glucose or glucose tolerance.
- Note the spelling: g-l-u-c-o-s-e.
- Distinguish glucose from lactose, fructose, and glycogen.
- Use memory cues (e. g., honey = quick energy) to recall context.
5-Step Learning Method - Learn English in English
Step 1: Meaning
What is the meaning of 'glucose'?
A.A type of protein
B.A mineral
C.A simple sugar
D.An enzyme
Step 2: Usage
Choose the correct sentence using 'glucose'.
A.The glucose of the car needs to be filled up.
B.She added glucose to her coffee for sweetness.
C.The glucose was running late to the meeting.
D.He kicked the glucose across the field.
Step 3: Similar Words
What is a synonym for 'glucose'?
A.Sodium
B.Fructose
C.Almond
D.Protein
Step 4: Opposite Words
What is an opposite word for 'glucose'?
A.Carbohydrate
B.Fats
C.Protein
D.Vitamin
Step 5: Mastery
Can you think of a real-life context involving 'glucose'?
A.She ate a meal high in carbohydrates to fuel her workout.
B.They tested her blood to check for glucose levels after the dessert.
C.After jogging, he needed a snack to replenish his energy levels.
D.Exercise helps improve the efficiency of breathing.
Want to practice more words?
Download LexiTalk app for personalized learning experience
Download App