How to Say "pith" in Spanish
The Spanish word for “pith” is “médula” — B2 level.
English → SpanishB2
nounB2
the center of a plant stem

Examples
La médula ósea es necesaria para producir células sanguíneas.
Bone marrow is necessary to produce blood cells.
El doctor está preocupado por una lesión en la médula espinal.
The doctor is worried about an injury to the spinal cord.
Esta planta tiene una médula muy blanda.
This plant has a very soft pith.
Gender and Articles
Even though it ends in 'a', it's a feminine word. Always use 'la' or 'una' with it.
Marrow vs. Spinal Cord
Mistake: “Using 'médula' alone to mean spinal cord in a technical sense.”
Correction: Always specify 'médula espinal' if you mean the spinal cord to avoid confusion with bone marrow ('médula ósea').
Related Translations
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