| Answer | Crossword Clue |
|---|---|
| IBAR | Flanged structural element |
| IBEAM | Flanged structural support |
| SLAB | Structural element |
| tie | structural element (as a rod or angle iron) holding two pieces together a tension member in a construction |
| hydroxyapatite | a complex phosphate of calcium that occurs as a mineral and is the chief structural element of vertebrate bone |
| hydroxyapatites | HYDROXYAPATITE, a complex phosphate of calcium that occurs as a mineral and is the chief structural element of vertebrate bone |
