Osmose 



A DICTIONARY 



Palmate 



6§'M0SE, the mutual diffusion of 

 liquids of different densities 

 through a membrane. It is 

 the peculiar property of os- 

 mose that the denser fluid 

 absorbs from the other 

 through the membrane more 

 than it gives in exchange. 

 The imbibition of fluids by 

 roots is due partially to os- 

 mose (endosmose), the fluid 

 within the plant being denser 

 than that in the soil. The out- 

 ward diffusion of fluid from 

 the plant into the soil, which 

 takes place in a feeble degree, 

 is termed Exosmose. 



flSMO'SIS, see Osmose. 



dS'SEOUS, bony in texture. 



dS'SIFLED, become like bone, as 

 a peach-stone. 



tiS'TlOLE, a small orifice, as that 

 in a perithecium for the dis- 

 charge of spores. 



tiSTI'OLXJM, see Ostiole. 



OUTER GLUMES, see Empty 

 Glumes. 



O'VAL, about twice as long as 

 broad, with regular curved 

 outlines; broadly elliptical. 



OVA'RIUM (pi. Ova'rla), see 

 Ovary. 



6'VAry, the part of a pistil con- 

 taining the ovules or seeds. 



O'VATE, like a longitudinal sec- 

 tion of an ordinary hen's egg, 

 with the attachment, if any, 

 at the broad end. Compare 

 Ovoid. 



O'VIFORM, see Ovoid. 



O'VOID, of the shape of a hen's 

 egg, and attached, if at all, at 

 the large end. Compare Ovate. 



O'VULE, the seed previous to fer- 

 tilization. 



OVtJLIF'EROTJS, bearing ovules. 



O'VUM (pi. O'va), see Oosphere. 



PACHYPHYL'LOUS, thick-leaved. 



PAD, a popular name for the leaf 

 of a water-lily. 



PA6'lNA (pi. Pa&'Inii), the sur- 

 face of an organ, especially the 

 upper or lower surface of a 

 leaf. 



PAlNT'ED, 

 posed in 

 intensity. 



having colors dis- 

 streaks of unequal 

 (Rare.) 



PAIRED, see Conjugate. 



PAL .EA'gEOIJS, see Paleaceous. 



PAL'ATE, the convex base of the 

 lower lip of a personate corolla, 

 as in snap-dragon. 



PALE, see Palet. 



PA'LEA (pi. Pa'leae), (1) the inner 

 bract of a flower in grasses 

 (palet); (2) one of the bracts 

 or scales upon the receptacle 

 in Composite. Also used by 

 some for Ramentum. 



PALEA'CEOUS, chaff-like; bear- 

 ing chaff or chaffy scales; con- 

 sisting of chaff. 



PALE0F.6T ANY, see Fossil 

 Botany. 



PAlE'OLA (pi. Pale'olse), see Lod- 

 icule. 



PAlE0PHYT6L'0GY, see Fossil 

 Botany. 



PAL'Et, the inner bract or chaff 

 of a flower in grasses; former- 

 ly known as the upper palet; 

 palea. Compare Glume. 



PALISADE' CEXLS, elongated 

 cells perpendicular to the epi- 

 dermis in the upper side of 

 most leaves. 



PALLES'CENT, somewhat pale. 



PAL'LiD, pale; wan; deficient in 

 color. 



PALM, three inches. 



PAL'MATE, lobed or divided so 

 that the sinuses all point to- 

 ward the apex of the petiole, 

 either moderately as in the 

 maple-leaf, or more deeply, 

 120 



