seco - shel
- secodont
- second generation
- second intermediate host
- second maturation division
- second messenger
- second polar body
- second thigh
- secondary
- secondary amyloidosis
- secondary bloat
- secondary bone marrow
- secondary bronchus
- secondary culture
- secondary dentine
- secondary dentition
- secondary echinococcosis
- secondary follicle
- secondary foramen
- secondary gonadal cord
- secondary hair
- secondary hemopoietic organ
- secondary hemorrhage
- secondary infection
- secondary interatrial septum
- secondary intestinal loop
- secondary keratitis
- secondary lung bud
- secondary lymphatic nodule
- secondary lymphatic organ
- secondary lymphedema
- secondary lysosome
- secondary messenger
- secondary nasal cavity
- secondary oocyte
- secondary oral cavity
- secondary ossification center
- secondary palate
- secondary peripheral nerve tumor
- secondary polar cell
- secondary sense cell