Here are definitions to some common phrases that may come up in a Complete Streets conversation.  Add your own in the Comments section below.  The Metropolitan Transportation Commission also has an excellent glossary of terms in their Bicycle/Pedestrian Safety Toolbox.

Complete Streets: are designed and operated to enable safe access for all users. Pedestrians, bicyclists, motorists and bus riders of all ages and abilities are able to safely move along and across a complete street.

Complete Streets Policy: an official government plan, at any level, that mandates the inclusion of complete streets in transportation and other infrastructure planning.

Non-Motorized Network: the existing infrastructure for non-motorized transportation, including sidewalks, bike-lanes, mixed-use paths, public transportation (buses, subways, light-rail), and bike routes.

Non-Motorized Network Plan: a plan, generally completed at the local level, that provides a plan of action for making the community more friendly to biking and walking. Generally, a non-motorized plan will  identifies the transportation system’s existing non-motorized facilities, establishes a future conceptual network with a map and list of improvements, and identifies resources to help fund future additions to the nonmotorized transportation network.

Bike Plans are a community’s vision to make bicycling an integral part of daily life. A plan recommends projects, programs and policies to encourage use of this practical, non-polluting and affordable mode of transportation.
Two common overall goals of a bicycle plan:
· To increase bicycle use, so that 5 percent of all trips less than five miles are by bicycle.
· To reduce the number of bicycle injuries by 50 percent from current levels.

Context Sensitive Solutions: Context sensitive solutions (CSS) is a collaborative, interdisciplinary approach that involves all stakeholders to develop a transportation facility that fits its physical setting and preserves scenic, aesthetic, historic and environmental resources, while maintaining safety and mobility. CSS is an approach that considers the total context within which a transportation improvement project will exist.

Mixed Use: An appropriate combination of multiple uses, inside a single structure or place within a neighborhood, where a variety of different living activities (live, work, shop, and play) are in close proximity (walking distance) to most residents.
http://ncppp.org/resources/papers/surprenant_development.pdf

Road Diet: A change in the number of travel lanes, or width of existing lanes, with the addition of other elements such as bike lanes or car parking. Enhances safety by reducing traffic conflict points and lowering speeds.

Transit-Oriented Development: Residential and commercial districts designed to maximize access by public transit and non-motorized transportation, with good connectivity, mixed-use, parking management and other design features that facilitate public transit use and maximize overall accessibility.

Smart Growth: invests time, attention, and resources into restoring community and vitality to center cities and older suburbs. New smart growth is more town-centered, is transit and pedestrian oriented, and has a greater mix of housing, commercial and retail uses. It also preserves open space and many other environmental amenities.

Greenways are linear corridors of land that connect key resources and open space within a region. Open spaces are blocks of land that are generally self-contained with limited connections or linkages to other areas. A greenways network includes greenways as well as hubs of specifically identified natural resources or open space and manmade features or destinations that influence the development of the development of the linear greenway corridor.