yellow bone marrow

6.1

Tissue inside the hollow part of long bones in adults that stores fat

noun
/ˈjɛloʊ boʊn ˈmɛroʊ/

Specialized

: médula ósea amarilla

With age, much of the red marrow is replaced by yellow bone marrow in the long bones.

Examples

The yellow bone marrow is crucial for energy storage.
Yellow bone marrow primarily functions as a fat store rather than in blood cell formation.
Doctors examined the patient's yellow bone marrow to assess the impact of the treatment.
In adults, yellow bone marrow replaces red marrow over time.
Yellow bone marrow is responsible for yellow bone marrow storage in the human body.
As people age, their red bone marrow gradually converts to yellow bone marrow.
The doctor explained that yellow bone marrow mainly consists of adipocytes.

Synonyms

yellow marrow

vsyellow bone marrow

Specialized

7.5

The soft material inside long bones of adults that is yellow because it stores fat

is the fuller phrase that explicitly mentions bones

How Fatty

yellow bone marrow

Specialized

6.1

red bone marrow

Specialized

4.9

Surface Forms

yellow bone marrow singular

yellow bone marrows plural

Morphology

yellow + bone + marrow

The phrase is a straightforward adjective + noun-noun combination: 'yellow' (a color) modifying 'bone marrow' (the tissue inside bones), so the meaning 'bone marrow that is yellow/in high fat content' is directly derivable from the parts. Although it is somewhat technical, the compositional pattern is regular and cross-linguistically common, so a B1 learner who knows the constituent words would understand it.

Etymology

Yellow bone marrow comes from its look: the marrow inside long bones looks yellow because it stores fat. So it means the marrow that mainly acts as a 'fat store' rather than making 'blood cells'.