concentric ring
1concentric-ring model — a theory of how urban land use develops over time. Developed by Earnest Burgess in 1924 to explain social patterns in Chicago, it was later proposed as a general theory of urban land use. It says that zones of transition, low, medium and high… …
2Concentric zone model —   Commuter zone …
3Ring — Ring, n. [AS. hring, hrinc; akin to Fries. hring, D. & G. ring, OHG. ring, hring, Icel. hringr, DAn. & SW. ring; cf. Russ. krug . Cf. {Harangue}, {Rank} a row,{Rink}.] A circle, or a circular line, or anything in the form of a circular line or… …
4Ring armor — Ring Ring, n. [AS. hring, hrinc; akin to Fries. hring, D. & G. ring, OHG. ring, hring, Icel. hringr, DAn. & SW. ring; cf. Russ. krug . Cf. {Harangue}, {Rank} a row,{Rink}.] A circle, or a circular line, or anything in the form of a circular line… …
5Ring blackbird — Ring Ring, n. [AS. hring, hrinc; akin to Fries. hring, D. & G. ring, OHG. ring, hring, Icel. hringr, DAn. & SW. ring; cf. Russ. krug . Cf. {Harangue}, {Rank} a row,{Rink}.] A circle, or a circular line, or anything in the form of a circular line… …
6Ring canal — Ring Ring, n. [AS. hring, hrinc; akin to Fries. hring, D. & G. ring, OHG. ring, hring, Icel. hringr, DAn. & SW. ring; cf. Russ. krug . Cf. {Harangue}, {Rank} a row,{Rink}.] A circle, or a circular line, or anything in the form of a circular line… …
7Ring dotterel — Ring Ring, n. [AS. hring, hrinc; akin to Fries. hring, D. & G. ring, OHG. ring, hring, Icel. hringr, DAn. & SW. ring; cf. Russ. krug . Cf. {Harangue}, {Rank} a row,{Rink}.] A circle, or a circular line, or anything in the form of a circular line… …
8Ring dropper — Ring Ring, n. [AS. hring, hrinc; akin to Fries. hring, D. & G. ring, OHG. ring, hring, Icel. hringr, DAn. & SW. ring; cf. Russ. krug . Cf. {Harangue}, {Rank} a row,{Rink}.] A circle, or a circular line, or anything in the form of a circular line… …
9Ring fence — Ring Ring, n. [AS. hring, hrinc; akin to Fries. hring, D. & G. ring, OHG. ring, hring, Icel. hringr, DAn. & SW. ring; cf. Russ. krug . Cf. {Harangue}, {Rank} a row,{Rink}.] A circle, or a circular line, or anything in the form of a circular line… …
10Ring finger — Ring Ring, n. [AS. hring, hrinc; akin to Fries. hring, D. & G. ring, OHG. ring, hring, Icel. hringr, DAn. & SW. ring; cf. Russ. krug . Cf. {Harangue}, {Rank} a row,{Rink}.] A circle, or a circular line, or anything in the form of a circular line… …
