If you’ve had some Hebrew education, chances are you know the Modern Hebrew word for street – רְחוֹב (re-KHOHV). The word comes from the root ר.ח.ב (r.kh.b), which is the concept of width.
To expand something is לְהַרְחִיב (le-hahr-KHEEV). Likewise, the act of expanding or an expansion is הַרְחָבָה (hahr-khah-VAH).
For example, אֻלְפָּן לָעִנְיָן מַרְחִיב אֶת עַצְמוֹ וְיַגִּיעַ לְרַעֲנָנָה (ool-PAHN lah-een-YAHN mahr-KHEEV et ahts-MOH ve-yah-GHEE-ah le-rah-ah-NAH-nah) – Ulpan La-Inyan is expanding itself and will arrive at Raanana.