Definitions of molecular mass, molecular weight, molar mass and molar weight. Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
Clawback has a more general definition. For example, premiums paid on an insurance policy may be refunded (or clawed back) if the policy is cancelled in a certain time frame. Such an arrangement is specified in the contract and referred to as a clawback provision. Clawback. 1. A drop in a security's price after a previous rise. 2. Money that must be refunded or given back for some reason or other. The term especially applies to tax advantages extended to a taxpayer subject to certain conditions that the taxpayer did not fulfill. clawback. 1.
wayback is an open source java implementation of the The Internet Archive Wayback Machine. The current production version of the Wayback Machine is implemented in perl, and lacks in maintainability and extensibility. Also, the code is not open source.