acicular

About 0.10 uses per million words.

Meaning

1. adjective Needle-shaped; slender like a needle or bristle.
2. adjective Having sharp points like needles.
3. adjective Of a leaf, slender and pointed, needle-like.

   the acicular foliage of coniferous trees

Similar words

needle-shaped pointed acerose acerate simple unsubdivided ferrite aragonite subacicular acanaceous

Often followed by

crystals ferrite or and particles structure setae lobe prisms