1. The formation of blood cells in the living body (especially in the bone marrow)
   - hematopoiesis, haematopoiesis, hemopoiesis, haemopoiesis, haemogenesis, hematogenesis, haematogenesis, sanguification

Type of: biological process, organic process

• spiny-finned fish
• spiny-headed worm
• spiny-leafed
• spiny-leaved
• spiny-stemmed
• SPipistrellus hesperus
• spiracle
• spiracular
• spiraea
• Spiraea prunifolia
• spiral
• spiral bandage
• spiral galaxy
• spiral nebula
• spiral ratchet screwdriver
• spiral spring
• spiral-shelled
• spiraling
• spiralling
• spirally
• spirant
• Spiranthes
• Spiranthes cernua
• Spiranthes porrifolia
• Spiranthes romanzoffiana