Glossary

Definitions of terms, standards, and identifiers used across this documentation.

TRON & tokens

TRX — the native coin of the TRON network.
SUN — the smallest TRX unit. 1 TRX = 1,000,000 SUN. Transaction amounts are expressed in SUN.
TRC-10 — TRON's native token standard, managed at the protocol level (identified by a numeric token id).
TRC-20 — TRON's smart-contract fungible-token standard (analogous to Ethereum's ERC-20).
TRC-721 — TRON's non-fungible-token (NFT) standard (analogous to ERC-721).
Energy — the resource consumed when executing smart-contract operations. Obtained by staking TRX (Stake 2.0) or burning TRX.
Bandwidth — the resource consumed by transaction size/byte count. Obtained by staking TRX or burning TRX; a small free daily amount is provided per account.
Stake 2.0 — TRON's resource-staking model. Staking TRX yields Energy or Bandwidth; resources can be delegated to other accounts (DelegateResourceContract / UnDelegateResourceContract). See Stake 2.0.

TronWeb — the JavaScript SDK for building, signing, and broadcasting TRON transactions. See the TronWeb docs.
window.tron — the provider object TronLink injects into every page. Exposes request, tronWeb, and on / removeListener.
tronWeb (instance) — the TronWeb SDK instance bound to the user's account/network, available as window.tron.tronWeb after authorization. false until authorized.
window.tronLink — the legacy provider object (deprecated in favor of window.tron).
iTron — an object injected only inside the TronLink mobile app's in-app DApp Explorer, exposing native app capabilities. See DApp Support.
HD wallet — a Hierarchical Deterministic wallet (BIP-32) deriving many keypairs from a single seed. BIP-44 defines the derivation path structure; the seed is represented by a mnemonic phrase. See HD Wallets.

TIP — TRON Improvement Proposal. The full index is at github.com/tronprotocol/tips.
EIP — Ethereum Improvement Proposal. TronLink reuses several EIP method names for compatibility.
TIP-1102 / EIP-1102 — the wallet connection request (eth_requestAccounts). See Proactively Request TronLink Plugin Features.
TIP-1193 / EIP-1193 — the provider interface and its events (connect, disconnect, etc.), including the ProviderRpcError shape.
TIP-3326 / EIP-3326 — the chain-switch request (wallet_switchEthereumChain).
TIP-6963 / EIP-6963 — multi-wallet provider discovery via the announceProvider / requestProvider events, so a DApp can pick a specific wallet without competing for window.tron.

ABI — Application Binary Interface: the JSON description of a contract's callable methods and events. If a token contract's ABI lacks a recognized method (e.g. transfer, approve), TronLink may not be able to offer that action.
chainId — the network identifier. TronLink uses the hex form (e.g. 0x2b6653dc) for wallet_switchEthereumChain and chainChanged, and the decimal EVM form (e.g. 728126428) for EIP-712 domain.chainId. See Networks & Addresses.
ProviderRpcError — the EIP-1193 error object emitted on disconnect, shaped { code: number; message: string; data?: unknown }.
permission id — the active permission index used for multi-signature transactions (passed to tronWeb.trx.multiSign). See Multi-Signature Transfer.
base58 / hex address — the two TRON address encodings (T... vs 41...). See Networks & Addresses.

MCP — Model Context Protocol, the standard TronLink's AI servers implement so agents can call wallet tools. See AI Support.
DeepLink — the tronlinkoutside:// URL scheme used to drive the TronLink mobile app from a DApp or H5 page. See DeepLink.