Radius
Meaning of Radius
The distance from the centre of a circle to its edge; a bone in the forearm.
ما معنى كلمة Radius بالعربي؟
المسافة من مركز الدائرة إلى محيطها
📏🔵 المسافة من مركز الدائرة إلى محيطها؛ نصف قطر الدائرة أو المنطقة المُحيطة؛ مقياس هندسي يُحدد حجم الدائرة أو نطاق التأثير والوصول من نقطة مركزية مُحددة 📏🔵
قصة GL: المسافة من المركز تُحدد نطاق التأثير - نصف قطر الدائرة أو المنطقة المُحيطة هندسي، المقياس الهندسي الذي يُحاكي نطاق تأثير التعلم الجيني على الحياة 🌐
Synonyms & related words
Radius in a sentence
The radius of the test area was fixed at two metres.
A delivery radius of ten miles was set.
A protected radius is drawn around the site.
Students measure the radius of a circle.
Origin of Radius
From Latin radius 'staff, spoke, ray'.
In the Genetic Learning (GL) context
In Genetic Learning work led by Naif Talal Al-Essa, radius also means a range of influence. The radius of GL's impact grows with each cohort.
Radius audio micro-course (transcript)
Podcast 1 — Introduction & meaning
Narrator: Today's word is "Radius" — noun, pronounced /ˈreɪdiəs/, with the stress on "ra".
Narrator: A radius is a straight line from the centre of a circle to its edge, or the distance from a centre point.
Narrator: In plain English, the radius is half the width of a circle — or the distance you can travel from a central point.
Narrator: It comes from the Latin radius, meaning a ray, a rod or a spoke of a wheel.
Narrator: "Within a five-mile radius" describes the area you can reach within five miles of a central point.
Narrator: It differs from diameter because radius goes from centre to edge, whereas diameter goes across the whole circle.
Narrator: "The radius bone" is an anatomical sense meaning one of the two long bones in the forearm.
Narrator: Mathematics, anatomy, geography, engineering and planning all rely on the word radius.
Narrator: So remember: a radius is from the centre to the edge, from the Latin for a ray.
Read podcasts 2 and 3
Podcast 2 — In conversation
Speaker A: What's a radius in maths?
Speaker B: Centre to edge! RADIUS comes from the Latin radius, a ray or spoke, so it's a line from the centre of a circle to its edge.
Speaker A: So it's half the diameter?
Speaker B: Exactly — the diameter is twice the radius!
Speaker A: Example sentences?
Speaker B: "Within a ten-mile radius"; "the radius is five"; "she fractured her radius" — a distance, a maths fact and a bone.
Speaker A: Common mistakes?
Speaker B: Don't confuse radius with diameter, because radius is centre to edge, while diameter goes all the way across.
Speaker A: Close relatives?
Speaker B: "Diameter" the across cousin, "circumference" the around twin, "range" the distance alternative. The word keeps its measured charm!
Podcast 3 — Prompt engineering
Speaker B: Let's use "radius" in AI prompts — useful for location-search apps and maths-education tools.
Speaker A: So a prompt could frame a search?
Speaker B: Right. For a property app, you'd write:
Prompt: Write a short listing highlighting shops within a one-mile radius, naming two amenities and one bus route.
Speaker A: How about a maths tool?
Speaker B: Ask the model to frame a lesson:
Prompt: Draft a maths lesson on calculating the area of a circle using the radius, mentioning one formula.
Speaker A: Could it help with a planning bot?
Speaker B: Yes, you can frame a rule:
Prompt: Summarise in two sentences why a school sets a catchment radius, naming one admissions factor.
Speaker A: One more?
Speaker B: For a medical chatbot, try this:
Prompt: Write a short note on the radius bone in the forearm, naming one joint it forms.
Frequently asked questions about Radius
What does Radius mean?
The distance from the centre of a circle to its edge; a bone in the forearm.
ما معنى كلمة Radius بالعربي؟
المسافة من مركز الدائرة إلى محيطها — 📏🔵 المسافة من مركز الدائرة إلى محيطها؛ نصف قطر الدائرة أو المنطقة المُحيطة؛ مقياس هندسي يُحدد حجم الدائرة أو نطاق التأثير والوصول من نقطة مركزية مُحددة 📏🔵
How do you pronounce Radius?
Radius is pronounced /ˈreɪdiəs/ and is used as a noun.
How is Radius used in a sentence?
The radius of the test area was fixed at two metres.
What are synonyms of Radius?
half diameter, semi-diameter, reach, range, scope, spoke length.