ADJ.
adequate, good
VERB + LUMBAR
chair, provide
LUMBAR + NOUN
spine
PREP.
between
adj
Related to the lower back or loin, specifically the five vertebrae between the rib cage and the pelvis.
The lumbar spine supports the upper body and transmits the weight of the upper body to the pelvis and lower limbs.
noun
The lumbar region.
A lumbar vertebra.
The first lumbar moved between the erect position and extreme flexion 8.2 cm.
The lumbar spine supports the upper body and transmits the weight of the upper body to the pelvis and lower limbs.
WiktionaryThe first lumbar moved between the erect position and extreme flexion 8.2 cm.
WiktionaryThis chair has good lumbar support.
Tatoeba · #2738800The backrest should conform to the natural curvature of your spine, and provide adequate lumbar support.
Tatoeba · #12190656i Register
In some senses, lumbar is marked as informal. Watch for register when choosing this word.