top layer
31layer — 1. noun /leɪə,lɛə,ˈleɪ.ɚ/ a) A single thickness of some material covering a surface b) A (usually) horizontal deposit; a stratum …
32top dressing — noun an application of manure or fertilizer to the surface layer of soil or a lawn. Derivatives top dress verb …
33top milk — noun Date: 1891 the upper layer of milk in a container enriched by whatever cream has risen …
34top milk — noun : the upper layer of milk in a container enriched by whatever cream has risen …
35top·coat — /ˈtɑːpˌkoʊt/ noun, pl coats [count] 1 somewhat old fashioned : a long coat the is worn in cold weather : ↑overcoat 2 : the last layer of paint that is put on a surface …
36top·soil — /ˈtɑːpˌsojəl/ noun [noncount] : the upper layer of soil in which plants have most of their roots rich, well fertilized topsoil …
37Active layer — In environments containing permafrost, the active layer is the top layer of soil that thaws during the summer and freezes again during the autumn. In all climates, whether they contain permafrost or not, the temperature in the lower levels of the …
38Application Layer — The Application Layer is the seventh level of the seven layer OSI model, and the top layer of the TCP/IP model. It interfaces directly to and performs common application services for the application processes; it also issues requests to the… …
39Germ layer — [ http://www.ncbi.nih.gov/About/primer/genetics cell.html NCBI] .] A germ layer is a collection of cells, formed during animal embryogenesis. Germ layers are particularly pronounced in the vertebrates; however, all animals more complex than… …
40active layer — The top layer of ground subject to annual thawing and freezing in areas underlain by permafrost. NRC …
