se·nes·cent 
(sĭ-nĕsənt)
(sĭ-nĕsənt)adj.
1. Growing old; aging.
2. No longer dividing. Used of a cell.
[Latin senēscēns, senēscent-, present participle of senēscere, to grow old, inchoative of senēre, to be old, from senex, sen-, old; see sen- in the Appendix of Indo-European roots.]
se·nescence n.
- Saint Eustatius
- Saint Francis River
- Saint Gall
- Saint Gall
- Saint-Gaudens
- Saint George
- Saint George's
- Saint George's Channel
- Saint Gotthard Pass
- Saint Helena
- Saint Helens
- Saint Helens
- sainthood
- Saint-Jean
- Saint-Jean
- Saint-John
- Saint John
- Saint John
- Saint-John Perse
- Saint John's
- Saint John's Eve
- Saint Johns River
- Saint John's wort
- Saint John'swort
- Saint Joseph