A concept or model.
Something constructed from parts.
A segment of nucleic acid, created artificially, for transplantation into a target cell or tissue.
To draw (a geometric figure) by following precise specifications and using geometric tools and techniques.
To build or form (something) by assembling parts.
To build (a sentence, an argument, etc.) by arranging words or ideas.
To make something hard smaller and smoother by gradually rubbing off tiny bits, to wear down.
To weaken someone's morale over a long period.