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# Descriptive words for varying L/D values

## Descriptive words for varying L/D values

(OP)
Hi everyone,

When describing objects that have a length to diameter ratio (tanks, capsules, etc.) I will normally say something is "slender" if L/D >> 1 and "squat" if L/D << 1. Is there a descriptive term for when L/D is around 1? Would "isometric" be a proper engineering use of that word, given its definition in English (as given by Google: "of or having equal dimension")?

### RE: Descriptive words for varying L/D values

When and engine bore/stroke ratio is 1:1 it's called square. I've not seen that used in other context.

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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.

### RE: Descriptive words for varying L/D values

"Aspect ratio" is the generic term. "Square" makes sense for 1:1, but I'm not sure what I would use for near 1:1.

============
"Is it the only lesson of history that mankind is unteachable?"
--Winston S. Churchill

### RE: Descriptive words for varying L/D values

The tank would be "unsure of themself"??

On the cusp

Trans-squat or Trans-slender

I also saw this online somewhere - they use the terms "short", "intermediate" and "long"
So the term intermediate might apply to your question.

### RE: Descriptive words for varying L/D values

squar-ish ? almost square ??

but why give it a name ? the slenderness ratio of the box is 1.1, or the L/D of the box is 1.1, or the box dim'ns L = x, D = y, slenderness = L/D = x/y ??

### RE: Descriptive words for varying L/D values

(OP)
@rb1957
I don't use the descriptors if I can define the L/D but I was just wondering if there was a commonly used word from other disciplines that I could adopt into my ChemE brain. I find it useful to have these words handy to use when speaking with other disciplines on projects or to more clearly define conceptual writing if I define my own jargon in the document and then I know everyone's speaking the same language when referencing a certain document (that's the hope anyway).

### RE: Descriptive words for varying L/D values

then square or squar-ish should be good enough for conversation. Rectangular is more correct, but less expressive?

### RE: Descriptive words for varying L/D values

I would just say "square" unless it being not perfectly square was consequential in which case I would use "relatively square".

Andrew H.
www.mototribology.com

### RE: Descriptive words for varying L/D values

(OP)
Thanks everyone, "square" it is!

### RE: Descriptive words for varying L/D values

Getting back to the engine terminology, the the bore is bigger than the stroke it is over square and when the bore is smaller than the stroke it is under square.

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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.

### RE: Descriptive words for varying L/D values

"Dumpy"? I've seen that used in the context of short portable cylinders that are still a bit longer than square.

For things a little shorter than square, the word that comes to mind is "Squat" - though I don't think I've actually seen it used in this sort of context.

A.

### RE: Descriptive words for varying L/D values

Low aspect ratio works in many contexts.

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