spicules
Minute skeletal needles
Spicules are small, needle-like structures.
In biology, they form the skeletal framework of sponges and appear in various marine invertebrates—tiny crystalline spikes of calcium carbonate or silite.
In astronomy, spicules are jets of gas shooting up from the sun's surface.
The word applies to any sharp, slender projection: bone spicules, ice spicules.
Porous absorbent masses
- siliceousContaining or resembling quartz
- filter-feedingTrapping particles from water
- sessileAttached at base
- marine biologyStudy of sea organisms
Initial cluster formation
- facetingCutting angled surfaces
- latticeOpenwork of crossed strips
- prismaticLight-dispersing, multicolored
- hexagonalSix-edged polygon's form
crystalline · precipitation · morphology · habit · symmetry · needle-like · acicular · geometric
Bone-synthesizing cells
- ossificationConversion to bone tissue
- mineralizationConversion to mineral form
- collagenStructural body protein
- calciumElement twenty, builds bones
phosphate · bone formation · lamellar · remodeling · osteoclasts · cartilage · calcification
Star's outermost atmosphere
- chromosphereStellar atmospheric zone
- plasmaElectrified matter state
- photosphereStar's light-emitting surface
- prominencesParts that stick out
magnetic field · jets · ejection · heliosphere · ultraviolet · emission · dynamic · transient
sponges
Porous absorbent masses
- siliceousContaining or resembling quartz
- filter-feedingTrapping particles from water
- sessileAttached at base
nucleation
Initial cluster formation
- facetingCutting angled surfaces
- latticeOpenwork of crossed strips
- prismaticLight-dispersing, multicolored
hexagonal · crystalline · precipitation · morphology · habit · symmetry · needle-like · acicular · geometric · trigonal
osteoblasts
Bone-synthesizing cells
- ossificationConversion to bone tissue
- mineralizationConversion to mineral form
- collagenStructural body protein
calcium · phosphate · bone formation · lamellar · remodeling · osteoclasts · cartilage · calcification
corona
Star's outermost atmosphere
- chromosphereStellar atmospheric zone
- plasmaElectrified matter state
- photosphereStar's light-emitting surface
prominences · magnetic field · jets · ejection · heliosphere · ultraviolet · emission · dynamic · transient
spiculessoft tissue
Non-rigid body structures
smooth surfaces · globules · cartilage · nodules · lobes