migrationaladj.

1888 Jrnl. Linn. Soc.: Zool. 20 223 In the case of plants and low types of animal life, the suitable situation is reached by a wide distribution of a vast number of seeds, spores, or germs, and the same situation is maintained by a loss of migrational power as soon as the germs begin to develop.

1896 Jrnl. Polit. Econ. 4 464 (note) It might perhaps be preferable to classify these most important influences separately as migrational selection.

1935 Ecology 16 55 In our experiment the short migrational distances involved with the small area of alfalfa greatly intensified the contrasts in leafhopper populations.

1952 G. H. Dury Map Interpr. xv. 172 A further method which relies on the cartographic record of stream gradients..is that of mapping the migrational tendencies of divides.

1971 Language 47 232 Klimov rejects the migrational theory for the Ibero-Caucasian languages, regarding them as autochthonous.

1992 Jrnl. Physical Chem. 96 6/1 The effects of these parameters on the diffusional and migrational fluxes.

1995 New Republic (Electronic ed.) 4 Sept. 4 Only a few of its environmental policies spill over into America—its treatment of migrational species, say, or deforestation.