Z-Index (CSS)

Stacking order property that controls which element appears on top in layered UIs, relevant for modals, wallet prompts, and canvas overlays in dapps.

Zig (Programming Language)

Low-level systems language focused on performance and safety without a GC; used for crypto tooling, provers, and high-assurance infrastructure components.

Zod (TypeScript Schema)

Runtime validation and TypeScript-first schema library used to enforce API and config shapes in dapp frontends, bots, and serverless functions.

Zstandard (zstd)

Modern compression algorithm with high ratios and fast speeds; widely used for log archives, snapshots, and state sync in blockchain and ML data pipelines.

ZooKeeper (Apache)

Distributed coordination service for configuration, naming, and leader election. Underpins many Kafka and HBase deployments in analytics for on-chain data.

ZeroMQ (ØMQ)

High-performance messaging library with pub/sub, req/rep, and pipeline patterns. Used in node infrastructure, indexers, and trading systems for low-latency IO.

Zero Trust Architecture (ZTA)

Security model that assumes no implicit trust based on network location. Enforces continuous verification and least privilege for users, services, and machines.

Zero Gas Transaction (Meta‑Tx)

Transaction whose gas is sponsored by a relayer or paymaster, enabling users to sign but not fund fees directly. Common with smart accounts and onboarding flows.

Zero Address (0x000…)

Special Ethereum address of all zeros used as a burn sink, default value, or sentinel in smart contracts. Transfers to it are effectively unrecoverable.

ZRC-2 (Zilliqa Token Standard)

Fungible token standard on Zilliqa akin to ERC-20; defines interfaces for transfers, allowances, and metadata on the Scilla smart-contract platform.

Zilliqa (ZIL)

Sharded smart-contract platform with Scilla language and token standards like ZRC-2; designed for high throughput and parallel transaction processing.

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