For instance, many structural engineers rely on laboratory work, and engineering tests that they hire others to perform. These additional fees can drive the cost of any project up, but even more importantly, they can derail a program that was originally on schedule.
Word forms: plural gaps. 1. countable noun. A gap is a space between two things or a hole in the middle of something solid. He pulled the thick curtains together, leaving just a narrow gap. ...the wind tearing through gaps in the window frames.
By 3 years of age, there is a 30 million word gap between children from the wealthiest and poorest families. A recent study shows that the vocabulary gap is evident in toddlers. By 18 months, children in different socio-economic groups display dramatic differences in their vocabularies. By 2 years, the disparity in vocabulary development has grown significantly (Fernald, Marchman, & Weisleder 2013).