Contiguous simply means touching or sharing a border, according to Merriam-Webster. When it comes to the United States, contiguous refers to all of the states that touch one another, without another country or a body of water coming between them. These are sometimes also referred to as the lower 48 states.
.apk extension stands for android package file. It is a file format used to distribute and install applications.It includes the programm codes ,assets ,resourses ,certificates and manifest file. .Dex extensions stands for Dalvix Executable files.
up vote 2 down vote. APK (Android Package) file is a file format which is created by Google. This format is one of the group members of Executable Files (similar to EXE, MST, AIR). APK file extension is in the Open Handset Alliance which is a mobile phone platform based on Linux. This file extension is especially created when using Google's Android SDK.