Creating a hybrid avocado variety adapted to hot climates would be quite an endeavor, given that avocados typically thrive in subtropical to mild climates. However, with advancements in agricultural science, such hybrids could potentially be developed to expand avocado cultivation into warmer regions. Here's what a "Hybrid Hot-Climate Avocado Grafted Plant" might involve:

1. Hybridization: Hybridizing avocado varieties that have some tolerance to higher temperatures could be attempted. This process would involve cross-breeding different avocado varieties or species to create offspring with traits suited for hotter climates. Desired traits might include heat tolerance, drought resistance, and the ability to produce high-quality fruit despite the heat.

2. Avocado: Avocado (Persea americana) is a fruit-bearing tree native to Central America and Mexico. It's prized for its creamy texture and rich flavor and is cultivated in many subtropical and Mediterranean climates worldwide.

3. Grafted Plant: Grafting would likely be employed to ensure the desired characteristics of the hybrid avocado are maintained. In grafting, tissues from one avocado variety (the scion, possibly a hybrid adapted to hot climates) are attached to the root system of another avocado tree (the rootstock). This ensures that the tree maintains the desired traits while benefiting from the rootstock's vigor and adaptability.

A "Hybrid Hot-Climate Avocado Grafted Plant" would thus be a grafted avocado tree with characteristics specifically developed to thrive in hot climates. This could include traits like heat tolerance, improved fruit quality under high temperatures, and possibly faster maturation to avoid extreme heat stress. Such plants could offer exciting possibilities for avocado cultivation in regions where traditional avocado varieties struggle with heat stress. However, it's worth noting that creating such hybrids would likely require extensive research and breeding efforts.